## Solved! Leetcode 1328. Break a Palindrome

Table of ContentsDescription: Break a PalindromeExample 1Example 2ConstraintsSolutionTime ComplexitySpace Complexity Description: Break a Palindrome Given a palindromic string of lowercase English letters palindrome, replace exactly one character with any lowercase English letter so that the resulting string is not a palindrome and that it is the lexicographically smallest one possible. Return the resulting string. If there is no way to replace a character ...

## Solved! Leetcode 1529. Minimum Suffix Flips

Table of ContentsDescription: Minimum Suffix FlipsExample 1Example 2Example 3ConstraintsSolutionTime ComplexitySpace Complexity Description: Minimum Suffix Flips You are given a 0-indexed binary string target of length n. You have another binary string s of length n that is initially set to all zeros. You want to make s equal to target. In one operation, you can pick an index i where 0 <= i < n and flip all bits in the inclusive range [i, ...

## Solved! Leetcode 2038. Remove Colored Pieces if Both Neighbors are the Same Color

Table of ContentsDescription: Remove Colored Pieces if Both Neighbors are the Same ColorExample 1Example 2Example 3ConstraintsSolutionTime ComplexitySpace Complexity Description: Remove Colored Pieces if Both Neighbors are the Same Color There are n pieces arranged in a line, and each piece is colored either by 'A' or by 'B'. You are given a string colors of length n where colors[i] is the color of the ith piece. Alice and ...

## Solved! Leetcode 2000. Reverse Prefix of Word

Table of ContentsDescription: Reverse Prefix of WordExample 1Example 2Example 3ConstraintsSolutionTime ComplexitySpace Complexity Description: Reverse Prefix of Word 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). If the character ch does not exist in word, do nothing. For example, if word = "abcdefd" and ch = "d", then you should reverse the segment that starts at 0 and ...

## Solved! Leetcode 1507. Reformat Date

Table of ContentsDescription: Reformat DateExample 1Example 2Example 3ConstraintsSolution Description: Reformat Date Given a date string in the form Day Month Year, where: Day is in the set {"1st", "2nd", "3rd", "4th", ..., "30th", "31st"}. Month is in the set {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}. Year is in the range [1900, 2100]. Convert the date string to the ...

## Solved Leetcode 245. Shortest Word Distance III

source: https://leetcode.com/problems/shortest-word-distance-iii/description/ Shortest Word Distance III Given an array of strings wordsDict and two strings that already exist in the array word1 and word2, return the shortest distance between the occurrence of these two words in the list. Note that word1 and word2 may be the same. It is guaranteed that they represent two individual ...

## Solved! Leetcode 567: Permutation in String

source: https://leetcode.com/problems/permutation-in-string/ Permutation in String Given two strings s1 and s2, return true if s2 contains a permutation of s1, or false otherwise. In other words, return true if one of s1’s permutations is the substring of s2. Example 1: Input: s1 = “ab”, s2 = “eidbaooo” Output: true Explanation: s2 contains one permutation of ...

## Leetcode 1061: Lexicographically Smallest Equivalent String

https://leetcode.com/problems/lexicographically-smallest-equivalent-string/description/ You are given two strings of the same length s1 and s2 and a string baseStr. We say s1[i] and s2[i] are equivalent characters. For example, if s1 = "abc" and s2 = "cde", then we have 'a' == 'c', 'b' == 'd', and 'c' == 'e'. Equivalent characters follow the usual rules of any equivalence relation: Reflexivity: 'a' == 'a'.Symmetry: 'a' == 'b' implies 'b' == 'a'.Transitivity: 'a' == 'b' and 'b' == 'c' implies 'a' == ...

## Leetcode 944: Delete Columns to Make Sorted

You are given an array of n strings strs, all of the same lengths. The strings can be arranged such that there is one on each line, making a grid. For example, strs = ["abc", "bce", "cae"] can be arranged as: abc bce cae You want to <strong>delete</strong> the columns that are <strong>not sorted lexicographically</strong>. In the above example (0-indexed), columns 0 (<code>'a'</code>, <code>'b'</code>, <code>'c'</code>) ...