Series
1) Describe the Question with Example Question: Place 4 queens on a 4x4 chessboard so that no two queens threaten each other. This means: No two queens share the same row. No two queens share the same column. No two queens share the same diagonal....
Explain the Problem Given an array of distinct integers candidates and a target integer target, return all unique combinations of candidates where the chosen numbers sum to target. The same number may be chosen from candidates an unlimited number of ...
Explain the Problem Given an integer array nums of unique elements, return all possible subsets (the power set). The solution set must not contain duplicate subsets and the subsets can be returned in any order. Example: Input: nums = [1, 2, 3] Output...
Explain the Problem Given an array nums of distinct integers, return all possible permutations. You can return the answer in any order. Example: Input: nums = [1, 2, 3] Output: [ [1, 2, 3], [1, 3, 2], [2, 1, 3], [2, 3, 1], [3, 1, 2], [3, ...
Explain the Problem Given an m x n board and a word, find if the word exists in the grid. The word can be constructed from letters of sequentially adjacent cells, where "adjacent" cells are horizontally or vertically neighboring. The same letter cell...
Explain the Problem Given a string s, partition s such that every substring of the partition is a palindrome. Return all possible palindrome partitioning of s. Example: Input: s = "aab" Output: [ ["a", "a", "b"], ["aa", "b"] ] Awesome! Let's mo...
