Given an array of distinct integers candidates and a target integer target, return a list of all unique combinations of candidates where the chosen numbers sum to target. You may return the…

Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses. Here’s the [Problem Link] to begin with. Example…

Given an integer N , Print all binary strings of size N which do not contain consecutive 1s. A binary string is that string…

Given an array arr of non-negative integers and an integer target, the task is to count all subsets of the array whose sum…

Hey students! If you’re exploring recursion and backtracking, this problem is a great follow-up to subsets or subsequences. It’s like the “Subsets with Sum K” but simpler,…

Given an array of positive integers and a target sum K, generate and print all subsequences of the array whose sum equals K. A subsequence is a sequence that…

Hey students! If you’re diving into recursion and backtracking, the “Subsets” problem (also known as generating the power set or all subsequences) is a perfect starting point. It’s like deciding…

You are given two integers L and R, your task is to find the XOR of elements of the range…

Given an integer array nums of unique elements, return all possible subsets (the power set). The solution set must not contain duplicate subsets. Return the solution in any order. Here’s…

Given a non-empty array of integers nums, every element appears twice except for one. Find that single one. You must implement a solution with a linear…