1588. Sum of All Odd Length Subarrays
Given an array of positive integers arr, calculate the sum of all possible odd-length subarrays. A s...
1582. Special Positions in a Binary Matrix
Given a rows x cols matrix mat, where mat[i][j] is either 0 or 1, return the number of special posit...
1576. Replace All ?'s to Avoid Consecutive Repeating Characters
Given a string s containing only lower case English letters and the '?' character, convert all the '...
1572. Matrix Diagonal Sum
Given a square matrix mat, return the sum of the matrix diagonals. Only include the sum of all the e...
1566. Detect Pattern of Length M Repeated K or More Times
Given an array of positive integers arr, find a pattern of length m that is repeated k or more times...
1560. Most Visited Sector in a Circular Track
Given an integer n and an integer array rounds. We have a circular track which consists of n sectors...
1556. Thousand Separator
Given an integer n, add a dot (".") as the thousands separator and return it in string for...
1550. Three Consecutive Odds
Given an integer array arr, return true if there are three consecutive odd numbers in the array. Oth...
1544. Make The String Great
Given a string s of lower and upper case English letters. A good string is a string which doesn't ha...
1539. Kth Missing Positive Number
Given an array arr of positive integers sorted in a strictly increasing order, and an integer k. Fin...