How to Partition an Array Into Three Parts With Equal Sum?
Given an array A of integers, return true if and only if we can partition the array into three non-empty parts with equal sums. Formally, we can partition the …
Category: math
How to Check If a Integer is a Strobogrammatic Number?
A strobogrammatic number is a number that looks the same when rotated 180 degrees (looked at upside down). Write a function to determine if a number is strobogrammatic. The …
How to Check Valid Perfect Square without Sqrt Function?
Given a positive integer num, write a function which returns True if num is a perfect square else False. Note: Do not use any built-in library function such as …
How to Compute the Maximum Average Subarray?
Given an array that has n integers, find a sub array of given length k that has the maximum average value. Write a function that outputs the maximum average …
How to Search in 2D Sorted Matrix?
Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties: Integers in each row are sorted from left …