Minimum characters for words leetcode

Minimum characters for words leetcode. Example 1: Input: s = "leetcodecom". length and answer [i] is the distance from index i to the closest occurrence of character c in s. Can you solve this real interview question? Change Minimum Characters to Satisfy One of Three Conditions - Level up your coding skills and quickly land a job. Example 1: Input: sentences A string is palindromic if it reads the same forward and backward. It can be shown that 2 seconds is the minimum time greater than zero required for word to revert to its initial state. 139. For example, in the string "aab", the frequency of 'a' is 2, while the frequency of 'b' is 1. Can you solve this real interview question? Minimum Suffix Flips - You are given a 0-indexed binary string target of length n. In one step, you can delete exactly one character in either string. Shortest Word Distance - LeetCode Input: s = "Let's take LeetCode contest" Output: "s'teL ekat edoCteeL tsetnoc" Example 2: Input: s = "Mr Ding" Output: "rM gniD" Constraints: 1 <= s. Example 1: Input: s = "abbaca" Output: "ca" Explanation: For example, in "abbaca" we could remove "bb" since the letters are adjacent and equal, and this is the only possible move. Thus, word becomes equal to "abacaba" and It contains a minimum of 3 characters. Flip means changing '0' to '1' and '1 Test Result. Example 1: Input: s = "zzazz" Output: 0 Explanation: The string "zzazz" is already palindrome we do not need any insertions. You Apr 5, 2024 · Return the minimum number of characters you need to delete to make word k-special. It can be proven that there is no longer path that satisfies the conditions. Example 2: Input: s = "bb". The testcases will be generated such that the answer is unique. , "Baaabb0" is weak, but "Baaba0" is Explanation: "the", "is", "sunny" and "day" are the four most frequent words, with the number of occurrence being 4, 3, 2 and 1 respectively. Return the minimum number of steps to make s palindrome. Example 1: Input: s = "aaabcccd", k = 2 Output: 4 Explanation: Compressing s without deleting anything will give us "a3bc3d" of length 6. You should pack your words in a greedy approach; that is, pack as many words as you can in each line. Find Words That Can Be Formed by Characters - LeetCode Can you solve this real interview question? Merge the strings by adding letters in alternating order, starting with word1. The replacement operations are given as three 0-indexed parallel arrays, indices, sources, and targets, all of length k. Return false otherwise. Return the minimum number of steps to make t an anagram of s. Example 1: Input: s = "Let's take LeetCode contest" Output: "s'teL ekat edoCteeL tsetnoc" Example 2: Input: s = "Mr Ding" Output: "rM gniD" Constraints: 1 <= s. Example 1: Input: word = "aabcaba", k = 0. 1249. You are given a string s. Substring with Concatenation of All Words - LeetCode Can you solve this real interview question? Minimum Window Substring - Given two strings s and t of lengths m and n respectively, return the minimum window substring of s such that every character in t (including duplicates) is included in the window. Return the maximum number of copies of target that can be formed by taking letters from s and rearranging them. 763. Sep 14, 2021 · Description. length <= 500. * For each index indices[i], the substring of s starting from indices[i] and up to (but not including) the next '#' character is equal Jan 14, 2017 · Given a target string and a set of strings in a dictionary, find an abbreviation of this target string with the smallest possible length such that it does not conflict with abbreviations of the strings in the dictionary. Change Minimum Characters to Satisfy One of Three Conditions - LeetCode. Example 2: Input: s = "a" Output: 0 Can you solve this real interview question? Is Subsequence - Given two strings s and t, return true if s is a subsequence of t, or false otherwise. Find Words That Can Be Formed by Characters - Level up your coding skills and quickly land a job. Given two strings a and b, return the minimum number of times you should repeat string a so that string b is a substring of it. Text Justification - Given an array of strings words and a width maxWidth, format the text such that each line has exactly maxWidth characters and is fully (left and right) justified. ) d = {} (To keep track of characters in the current window. Example 1: Input: s = "0100" Output: 1 Explanation: If you change the last character to '1', s will be "0101", which is alternating. Given a tree of n nodes labelled from 0 to n - 1, and an array of n - 1 edges where edges[i] = [ai, bi] indicates that there is an undirected edge between the two nodes The keys can be remapped to any amount of letters, but each letter must be mapped to exactly one key. You may return the answer in any order. LeetCode Problem 2000. length == s. Example 1: Input: s = "aab" Output: 0 Explanation: s is already good. Thus, word becomes equal to "cababac". Notice that an empty string is also good. The input string is given as an array of characters s. Check if the substring sources[i] occurs at index indices[i] in the Can you solve this real interview question? Minimum Suffix Flips - You are given a 0-indexed binary string target of length n. It contains only digits (0-9), and English letters (uppercase and lowercase). Can you solve this real interview question? Longest Substring Without Repeating Characters - Level up your coding skills and quickly land a job. Given a 0-indexed string word and a character ch, reverse the segment of word that starts at index 0 and ends at the index of the first occurrence of ch (inclusive). ) First Given a string s, delete the minimum possible number of characters from s to make it fancy. Feb 14, 2016 · We want to find the minimum window in s that contains all the characters in t. Return true if it is possible to get the number of distinct characters in word1 and word2 to be equal with exactly one move. At every second, you must perform the following operations: * Remove the first k characters of word. length <= 5 * 104 * s Given a binary array nums and an integer k, return the maximum number of consecutive 1's in the array if you can flip at most k 0's. You can take some letters from s and rearrange them to form new strings. You can return the answer in any order. It can be shown that the answer will always be unique. Example 1: Output: ["e","l","l"] Example 2: Output: ["c","o"] Constraints: words[i] consists of lowercase English letters. 524. Longest Word in Dictionary through Deleting. * '*' Matches any sequence of characters (including the empty sequence). Example 2: Find Words That Can Be Formed by Characters - Level up your coding skills and quickly land a job. Nov 27, 2023 · Description. It includes at least one vowel. Example 2: Input: s = " fly me to the moon " Output: 4 Given a string s, delete the minimum possible number of characters from s to make it fancy. Your task is to remove the minimum number of parentheses ( '(' or ')', in any positions ) so that the resulting parentheses string is valid and return any valid string. Example 1: Input: num = "1432219", k = 3. For example, the underlined substrings in "computer" and "computation" only differ by the 'e'/'a', so this is a valid way. Given a string s and a dictionary of strings wordDict, return true if s can be segmented into a space-separated sequence of one or more dictionary words. Example 1: Input: s = "aab" Output: 1 Explanation: The palindrome partitioning ["aa","b"] could be produced using 1 cut. Shortest Palindrome - You are given a string s. The answer is guaranteed to be unique under the given constraints. The result of this move is that the string is Nov 27, 2023 · Description. s does not contain any leading or trailing spaces. Example 1: Input: words = ["leet","code"], x = "e" Output: [0,1] Explanation: "e" occurs in both words: "leet Word Ladder II. If the character ch does not exist in word, do nothing. Explanation: At the 1st second, we remove characters "abac" from the prefix of word, and add characters "caba" to the end of word. You want to make s equal to target. A subsequence of a string is a new string that is formed from the original string by deleting some (can be none) of the characters without disturbing the relative positions of the remaining characters. If it is impossible for b to be a substring of a after repeating it, return -1. Example 1: Input: word1 = "ac", word2 = "b" Output: false Explanation: Any pair of swaps would yield two distinct characters in the first string, and one in the second string. Example 1: Input: word1 = "sea", word2 = "eat" Output: 2 Explanation: You need one step to make "sea" to "ea" and another step to Longest Substring Without Repeating Characters - LeetCode. Partition Labels. Step-by-Step Process: Initialization: need = {'A': 1, 'B': 1, 'C': 1} (The count of each character needed from t. It includes at least one consonant. However, you must Can you solve this real interview question? Substring with Concatenation of All Words - Level up your coding skills and quickly land a job. Output: 3. The product of their lengths is: 3 * 3 = 9. Note that the same word in the dictionary may be reused multiple times in the segmentation. Given a string array words, return an array of all characters that show up in all strings within the words (including duplicates). It can be proven that the answer is unique. Example 1: Input: word = "b Can you solve this real interview question? Rearrange Characters to Make Target String - You are given two 0-indexed strings s and target. Example 2: Input: s = "cabaabac" Output: 0 Explanation: An optimal sequence of operations is: - Take prefix = "c" and suffix Write a function that reverses a string. Minimum Remove to Make Valid Parentheses. length <= 5 * 10 4; s contains printable ASCII characters. Explanation: We can make word 0 -special by deleting 2 occurrences of "a" and 1 occurrence of "c". In other words, find the number of substrings in s that differ from some substring in t by exactly one character. Repeated String Match. If a string is longer than the other, append the additional letters onto the end of the merged string. Example 2: Input: s = "mbadm" Output: 2 Explanation: String can be "mbdadbm" or "mdbabdm". Return the final string after the deletion. This is the best place to expand your knowledge and get prepared for your next interview. Can you solve this real interview question? Minimum Moves to Convert String - Level up your coding skills and quickly land a job. Return the maximum possible length of s. Return the minimum number of operations needed to make s alternating. Find Words That Can Be Formed by Characters - LeetCode Find Words Containing Character - You are given a 0-indexed array of strings words and a character x. Can you solve this real interview question? Short Encoding of Words - A valid encoding of an array of words is any reference string s and array of indices indices such that: * words. Example 2: Input: word = "abacaba", k = 4 Output: 1 Explanation: At the 1st second, we remove characters "abac" from the prefix of word, and add characters "caba" to the end of word. ) First Can you solve this real interview question? Wildcard Matching - Given an input string (s) and a pattern (p), implement wildcard pattern matching with support for '?' and '*' where: * '?' Matches any single character. Therefore, word becomes equal to "baba" where freq('a') == freq('b') == 2. Example 3: Input: s = "1111" Output: 2 Explanation: You need two Find Words Containing Character - You are given a 0-indexed array of strings words and a character x. The distance between two indices i and j is abs (i - j), where abs is the absolute value function. Example 2: . Minimum Insertion Steps to Make a String Palindrome - LeetCode. You are given an array of strings sentences, where each sentences[i] represents a single sentence. Return the minimum number of characters you need to delete to make word k-special. Return the maximum score of any valid set of words formed by using the given letters (words[i] cannot be used two or more times). Output: [0,1] Can you solve this real interview question? Find And Replace in String - You are given a 0-indexed string s that you must perform k replacement operations on. Word Break. Note that the partition is done so that after concatenating all the parts in order, the resultant string should be s. You can convert s to a palindrome by adding characters in front of it. An example mapping of letters to keys on a telephone keypad is given The keys can be remapped to any amount of letters, but each letter must be mapped to exactly one key. Flip means changing '0' to '1' and '1 Can you solve this real interview question? Strong Password Checker - A password is considered strong if the below conditions are all met: * It has at least 6 characters and at most 20 characters. Output: 5. Count Unique Characters of All Can you solve this real interview question? Replace All Digits with Characters - You are given a 0-indexed string s that has lowercase English letters in its even indices and digits in its odd indices. A subsequence is an array that can be derived from another array by deleting some or no elements without changing Minimum Moves to Convert String - LeetCode. If there is no such substring, return the empty string "". A transformation sequence from word beginWord to word endWord using a dictionary wordList is a sequence of words beginWord -> s 1 -> s 2 -> -> s k such that: Every adjacent pair of words differs by a single letter. length <= 10. Thus, word becomes equal to "abacaba" and Shortest Distance to a Character - Given a string s and a character c that occurs in s, return an array of integers answer where answer. Output: [0,1] Can you solve this real interview question? Find Words That Can Be Formed by Characters - You are given an array of strings words and a string chars. Delete Operation for Two Strings - Given two strings word1 and word2, return the minimum number of steps required to make word1 and word2 the same. Note that beginWord does not need to be in wordList. All the words in s are separated by a single space. Explanation: At the 1st second, we remove characters "aba" from the prefix of word, and add characters "bac" to the end of word. Find Words That Can Be Formed by Characters - LeetCode Can you solve this real interview question? Remove Palindromic Subsequences - You are given a string s consisting only of letters 'a' and 'b'. Example 1: Input: s = "leeetcode" Output: "leetcode" Explanation: Remove an 'e' from the first group of 'e's to create "leetcode". A string is good if it can be formed by characters from chars (each character can only be used once). Medium. Every s i for 1 <= i <= k is in wordList. There is at least one word in s. Example 1: Input: s = "leEeetcode" Output: "leetcode" Explanation: In the first step, either you choose i = 1 or i = 2, both will result "leEeetcode" to be reduced to "leetcode". length <= 5 * 10 4; s contains printable ASCII Here, freq(x) denotes the frequency of the character x in word, and |y| denotes the absolute value of y. You must do this by modifying the input array in-place with O(1) extra memory. Return true if word is valid, otherwise, return false. It is not necessary to use all characters in letters and each letter can only be used Feb 11, 2024 · Return the minimum time greater than zero required for word to revert to its initial state. * Add any k characters to the end of word. Can you solve this real interview question? Minimum Additions to Make Valid String - Given a string word to which you can insert letters "a", "b" or "c" anywhere and any number of times, return the minimum number of letters that must be inserted so that word becomes valid. Formally, a parentheses string is valid if and only if: Apr 5, 2024 · Return the minimum number of characters you need to delete to make word k-special. Example 1: Input: word = "aabcaba", k = 0 Output: 3 Explanation: We can make word 0-special by deleting 2 occurrences of "a" and 1 occurrence of "c". The matching should cover the entire input string (not partial). A Palindrome String is one that reads the same backward as well as forward. The test cases are generated such that you can reach nums[n - 1]. For every odd index Can you solve this real interview question? Minimum Cost to Convert String II - You are given two 0-indexed strings source and target, both of length n and consisting of lowercase English characters. Return an array of indices representing the words that contain the character x. Explanation: Remove the three digits 4, 3, and 2 to form the new number 1219 which is the smallest. Return the minimum number of pushes needed to type word after remapping the keys. It is not necessary to use all characters in letters and each letter can only be used once Length of Last Word - Given a string s consisting of words and spaces, return the length of the last word in the string. Shortest Word Distance II - LeetCode It can be shown that 2 seconds is the minimum time greater than zero required for word to revert to its initial state. Can you solve this real interview question? Minimum Absolute Sum Difference - You are given two positive integer arrays nums1 and nums2, both of length n. length == indices. There is a function shift(c, x), where c is a character and x is a digit, that returns the xth character after c. Example 1: Input: s = "ca" Output: 2 Explanation: You can't remove any characters, so the string stays as is. * Otherwise, change the first letter Constraints: * 1 <= words. Note that you do not necessarily need to add the same characters that you removed. Example 1: Input: s = "aa", p = "a Find Words That Can Be Formed by Characters - Level up your coding skills and quickly land a job. Example 1: Input: s = "leetcode" Output: 2 Explanation: The substring "ee" is of length 2 with the character 'e' only. For example, the abbreviation “a32bc” has length = 4 Can you solve this real interview question? Capitalize the Title - You are given a string title consisting of one or more words separated by a single space, where each word consists of English letters. Example 1: Input: s = "aacecaaa" Output: "aaacecaaa" Example 2: Input: s = "abcd" Output: "dcbabcd" Constraints: * 0 <= s. Given a string word, return the minimum number of seconds to type out the characters in word. Output: 9. * It contains at least one lowercase letter, at least one uppercase letter, and at least one digit. The string is called alternating if no two adjacent characters are equal. Example 1: Input: nums = [1,1,1,0,0,0,1,1,1,1,0], k = 2 Output: 6 Explanation: [1,1,1,0,0,1,1,1,1,1,1] Bolded numbers were flipped from 0 to 1. length, chars. Example 2: Input: s = "abBAcC" Output: "" Explanation: We Dec 2, 2023 · Can you solve this real interview question? Find Words That Can Be Formed by Characters - You are given an array of strings words and a string chars. Example 1: Input: s = "Hello World" Output: 5 Explanation: The last word is "World" with length 5. 'a', 'e', 'i', 'o', 'u', and their uppercases are vowels. Return the number of substrings that satisfy the condition above. The length of this path is 3, so 3 is returned. - Move the pointer clockwise to 'b' in 1 second. Return a list of integers representing the size of these parts. Return the minimum number of steps to make the given string empty. Given a string s, reverse the order of characters in each word within a sentence while still preserving whitespace and initial word order. You can replace at most one element of nums1 with any other element in nums1 to minimize the absolute sum Can you solve this real interview question? Group Anagrams - Given an array of strings strs, group the anagrams together. Example 3: Input: s = "LEETCODE" Output: 92 Constraints: * 1 <= s. Example 1: Input: word = "abc". You are given a 0-indexed array of strings words and a character x. Example 1: Input: word = "abacaba", k = 3. An example mapping of letters to keys on a telephone keypad is given Explanation: The longest path where each two adjacent nodes have different characters in the tree is the path: 0 -> 1 -> 3. Can you solve this real interview question? Minimum Height Trees - A tree is an undirected graph in which any two vertices are connected by exactly one path. We want to partition the string into as many parts as possible so that each letter appears in at most one part. The absolute sum difference of arrays nums1 and nums2 is defined as the sum of |nums1[i] - nums2[i]| for each 0 <= i < n (0-indexed). Return the sum of lengths of all good strings in words. Given a string s, return the power of s. For example, if word = “abcdefd” and ch = “d”, then you should reverse the Can you solve this real interview question? Redistribute Characters to Make All Strings Equal - You are given an array of strings words (0-indexed). You are given a string word. Remove K Digits. . Find Words That Can Be Formed by Characters - LeetCode In other words, if you are at nums[i], you can jump to any nums[i + j] where: 0 <= j <= nums[i] and; i + j < n; Return the minimum number of jumps to reach nums[n - 1]. In one operation, you can pick an index i where 0 <= i < n and flip all bits in the inclusive range [i, n - 1]. length <= 100 * words[i] and chars consist of lowercase English letters. In a single step you can remove one palindromic subsequence from s. Explanation: The characters are printed as follows: - Type the character 'a' in 1 second since the pointer is initially on 'a'. Easy. k is in the range [1, The number of unique words[i]] Can you solve this real interview question? Minimum Number of Swaps to Make the Binary String Alternating - Given a binary string s, return the minimum number of character swaps to make it alternating, or -1 if it is impossible. A word is a maximal substring consisting of non-space characters only. Return the maximum number of words that appear in a single sentence. Example 1: Input: word1 = "abc", word2 = "pqr". Constraints: 1 <= words. Example 1: Input: s = "leetcode", wordDict = ["leet","code"] Output: true. Can you solve this real interview question? Minimum Insertion Steps to Make a String Palindrome - Level up your coding skills and quickly land a job. A string is called valid if it can be formed by concatenating the string "abc" several times. length * The reference string s ends with the '#' character. For example, the strings "010" and "1010" are alternating, while the string "0100" is not Substring with Concatenation of All Words - Level up your coding skills and quickly land a job. You are also given two 0-indexed string arrays original and changed, and an integer array cost, where cost[i] represents the cost of converting the string original[i] to the string changed[i]. e. Explanation: An optimal solution is to choose "ete" for the 1 st subsequence and "cdc" for the 2 nd subsequence. Explanation: The merged string will be merged as so: word1: a b c. You need to find the minimum number of times the keys will be pushed to type the string word. An Anagram is a word or phrase formed by rearranging the letters of a different word or phrase, typically using all the original letters exactly once. In one operation, pick two distinct indices i and j, where words[i] is a non-empty string, and move any character from words[i] to any position in words[j]. Feb 9, 2024 · Return the minimum time greater than zero required for word to revert to its initial state. Example 2: Input: s = "10" Output: 0 Explanation: s is already alternating. length <= 105 * s consists of uppercase English letters only. Return true if you can make every string in words equal using any number of operations Can you solve this real interview question? Maximum Length of a Concatenated String with Unique Characters - You are given an array of strings arr. Given a string s of '(' , ')' and lowercase English characters. An Anagram of a string is a string that contains the same characters with a different (or the Shortest Word Distance II - Level up your coding skills and quickly land a job. Example 1: Input: words = ["leet","code"], x = "e" Output: [0,1] Explanation: "e" occurs in both words: "leet Can you solve this real interview question? Minimum Number of Steps to Make Two Strings Anagram - You are given two strings of the same length s and t. Can you solve this real interview question? Maximum Score Words Formed by Letters - Given a list of words, list of single letters (might be repeating) and score of every character. In other words, any connected graph without simple cycles is a tree. You have another binary string s of length n that is initially set to all zeros. Example 1: Input: words = ["leet","code"], x = "e". Notice: string "abc" repeated 0 times is "", repeated 1 time is "abc" and repeated 2 times is "abcabc". * It does not contain three repeating characters in a row (i. Example 1: Input: nums = [2,3,1,1,4] Output: 2 Explanation: The minimum number of jumps to reach the last index Can you solve this real interview question? Maximum Number of Words Found in Sentences - A sentence is a list of words that are separated by a single space with no leading or trailing spaces. Output: 1. If there is more than one possible result, return the longest word with the smallest lexicographical order. Given a string s and a string array dictionary, return the longest string in the dictionary that can be formed by deleting some of the given string characters. Here, freq(x) denotes the frequency of the character x in word, and |y| denotes the absolute value of y. Output: 2. Given string num representing a non-negative integer num, and an integer k, return the smallest possible integer after removing k digits from num. Output: "apbqcr". Example 1: Input: s Feb 14, 2016 · We want to find the minimum window in s that contains all the characters in t. Return the minimum length of s after performing the above operation any number of times (possibly zero times). A string s is formed by the concatenation of a subsequence of arr that has unique characters. Shortest Word Distance - Level up your coding skills and quickly land a job. Each number or letter in the abbreviation is considered length = 1. words[i] consists of lowercase English letters. 1 <= words[i]. Return the shortest palindrome you can find by performing this transformation. * For example, shift('a', 5) = 'f' and shift('x', 0) = 'x'. (i. In one step you can choose any character of t and replace it with another character. A string is a subsequence of a given string if it is generated by deleting some characters of a given string without Return the final string after all such duplicate removals have been made. Capitalize the string by changing the capitalization of each word such that: * If the length of the word is 1 or 2 letters, change all letters to lowercase. Return the merged string. To complete the ith replacement operation: 1. Pad extra spaces ' ' when necessary so that each line has Length of Last Word - Given a string s consisting of words and spaces, return the length of the last word in the string. Example 2: Input: s = " fly me to the moon " Output: 4 Can you solve this real interview question? Minimum Time to Revert Word to Initial State I - You are given a 0-indexed string word and an integer k. Given a list of words, list of single letters (might be repeating) and score of every character. Return the minimum cuts needed for a palindrome partitioning of s. Consecutive Characters - The power of the string is the maximum length of a non-empty substring that contains only one unique character. Example 2: Input: s = "aaabbbcc" Output: 2 Explanation: You can delete two 'b's resulting in 686. Output: "1219". Example 2: Input: word = "abacaba", k = 4. length <= 1000 * 1 <= words[i]. ) cnt = 0 (To count how many of the required characters we have in the current window. Note that the returned array may be in any order. Example 2: Input: parent = [-1,0,0,0], s = "aabc". The frequency of a character in a string is the number of times it appears in the string. Example 2: Find the minimum length of the run-length encoded version of s after deleting at most k characters. Palindrome Partitioning II - Given a string s, partition s such that every substring of the partition is a palindrome. , "ace" is a subsequence of "abcde" while 402. as rr dy wx jb uf bs zs su ac