CODU Sudoku
Problem Description ( TCS Codevita-2020 CODU Sudoku ) CODU is solving a 7x7 sudoku. Help him in solving the unique Sudoku. Rules are as follows 1. There are 7 regions colored differently. Each region must have a single occurrence of numbers between range [1, 7]. 2. Regions don't have a fix shape and it can change from input to input. 3. Each row must have a single occurrence of numbers between range [1, 7] across all input. 4. Each column must have a single occurrence of numbers between range [1, 7] across all input. Some numbers in some rows, columns and regions will be given. These will be between [1, 7]. Zero (0) denotes that the number is covered. Uncovering it will give a number between [1, 7]. Your task is to fill the numbers [1,7] where there is a 0 such that the 7x7 Sudoku is solved. 7x7 Sudoku is said to be solved when every region, every column, every row has exactly one occurrence of numbers [1,7]. Constraints 7 < Known/Given numbers in Entire Sudoku < 14 Input I