Rotate Image in Java - Leetcode

class Solution {
    public void rotate(int[][] matrix) {

      //Transpose

      for(int i =0 ; i <matrix.length;i++){
          for(int j = i; j <matrix[0].length;j++){
              int temp = matrix[i][j];
              matrix[i][j] = matrix[j][i];
              matrix[j][i] = temp;
          }
      }

      // reverse column wise

      for(int i =0; i <matrix.length;i++){
          int li =0;
          int ri = matrix[i].length-1;

            while(li <ri){
                int temp = matrix[i][li];
                matrix[i][li] = matrix[i][ri];
                matrix[i][ri] = temp;

                li++;
                ri--;
            }
      }
    }
}