Given an array arr[] containing non-negative integers, the task is to divide it into two sets set1 and set2 such that the absolute difference between their sums is…

This problem is a direct extension of the Subset Sum Problem: instead of checking if any subset sums to a given…

Given an array of positive integers arr[] and a value sum, determine if there is a subset of arr[] with sum equal to given sum. Here’s…

You are given a rows x cols matrix grid representing a field of cherries where grid[i][j] represents the number of cherries that you can collect from…

Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it can trap…

Given a circular integer array nums (i.e., the next element of nums[nums.length – 1] is nums[0]), return the next greater number for every element in nums. Here’s the [Problem…

Given an array arr[ ] of integers, the task is to find the next greater element for each element of the array…

Postfix, prefix, and infix are three common notations used to write arithmetic expressions. In infix notation, the operator is placed between…

If you want to master stack-related challenges and ace your coding interviews, understanding how to implement a Min Stack is crucial. This…

The Valid Parentheses problem is a classic interview question to check your understanding of stacks and string parsing. It evaluates whether a…