Rotate Matrix (Transpose)

rotate.ts

 function rotate(matrix: number[][]) {
         let n = matrix.length;
            // transpose matrix
            for (let i = 0; i < n; i++) {
              for (let j = i; j < n; j++) {
                let tmp = matrix[j][i];
                matrix[j][i] = matrix[i][j];
                matrix[i][j] = tmp;
                console.log(tmp,matrix[j][i]);
              }
            }
            // reverse each row
            for (let i = 0; i < n; i++) {
              for (let j = 0; j < n / 2; j++) {
                let tmp = matrix[i][j];
                matrix[i][j] = matrix[i][n - j - 1];
                matrix[i][n - j - 1] = tmp;
              }
            }
    }