You are given a string s and an array of queries queries, where queries[i] = [lefti, righti, ki]. For each query, you can rearrange the substring s[lefti...righti] and replace up to ki characters in it with any lowercase English letters. Determine whether it is possible to form a palindrome from the resulting substring. Return an array of booleans answer where answer[i] is true if it is possible to form a palindrome for the i-th query, otherwise false.
You are given two strings s and t of the same length, and an integer maxCost. You want to change string s to string t. The cost of changing the ith character of s to the ith character of t is the absolute difference between their ASCII values. Your task is to find the maximum length of a substring of s that can be changed to match the corresponding substring of t, with the total cost not exceeding maxCost.
You are given an array of integers nums and an integer k. A subarray is considered ’nice’ if it contains exactly k odd numbers. Your task is to return the number of nice subarrays in the given array.
You are given a matrix of integers and a threshold. Your goal is to find the maximum side length of a square where the sum of the elements inside the square is less than or equal to the threshold.
You are given an array of positive integers arr and an array of queries. For each query [lefti, righti], calculate the XOR of elements from index lefti to righti (inclusive). Return an array answer where each element corresponds to the XOR result of the respective query.
Given a matrix of integers, where each element represents a value, you need to calculate the sum of all elements in a sub-matrix for each cell. For each cell, the sub-matrix includes all elements within a square grid of size (2k+1) x (2k+1) centered at that cell. If the sub-matrix extends beyond the boundaries of the matrix, only the valid elements within the matrix should be considered.