#java-language
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Write a program to solve a Sudoku puzzle by filling the empty cells. A sudoku solution must satisfy all of the following rules: Each of the digits...
Given a collection of candidate numbers (candidates) and a target number (target), find all unique combinations in candidates where the candidate...
class Solution { public void rotate(int[][] matrix) { for (int col = 0; col < matrix[0].length; col++){ for (int row = 0; row...
Given an unsorted integer array nums, return the smallest missing positive integer. You must implement an algorithm that runs in O(n) time and uses...
