An algorithm to print the chess board pattern in javascript.

We will be writing a program to print the chess board pattern. '#' will represent the black box and ' ' white space will represent the white box on the chessboard.

Example

Input: 8 8 Output: # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

Implementation

The chess board can be of any dimension so we will have to create a dynamic function.

We will create a function that will accept the rows and columns of the chess board as an input and print the the pattern.

We will use nested loops to print the pattern, In each row we will check if the current iteration is odd then will start the pattern with ' ' else we will start with '#' .

else we will start with . In the inner loop we will check if the current pattern is '#' then swap it with ' ' and vice versa.

then swap it with and vice versa. Join the pattern together and print them after the end of the inner loop.

Repeat this for each row.

let chessboard = (row, column) => { for(let i = 0; i < row; i++){ //If odd then start with ' ' //Else start with '#' let start = i % 2 === 1 ? ' ' : '#'; //Temp str to stor the pattern of the column let str = ''; for(let j = 0; j < column; j++){ //Swap current pattern with another one in each iteration start = start == '#' ? ' ' : '#'; str += start; } //Print the pattern for the current row console.log(str); } }

Input: chessboard(3, 5); chessboard(8, 8); Output: " # # " "# # #" " # # " " # # # #" "# # # # " " # # # #" "# # # # " " # # # #" "# # # # " " # # # #" "# # # # "

Time complexity: O(m * n).

Space complexity: O(1).

Time and Space complexity