sort a 2d array code example

Example 1: sort by index 2d array python

a = [[9, 9, 2], [9, 9, 3], [9, 9, 8], [9, 9, 4], [9, 9, 1], [9, 9, 5]]

b = sorted(a, key=lambda a:a[2])

#b contains the following arrays, sorted by their second index:
[[9, 9, 1], [9, 9, 2], [9, 9, 3], [9, 9, 4], [9, 9, 5], [9, 9, 8]]

Example 2: arrays sort 2d array java

Arrays.sort(myArr,(double[] a,double[] b)->{
                //here multiple lines of code can be placed
                return a[0]-b[0]; 
            });

Example 3: java sort 2d array

Arrays.sort(myArr, (a, b) -> a[0] - b[0]);

Example 4: how to print a 2d array in c++

for (int i = 0; i < m; i++) 
{ 
   for (int j = 0; j < n; j++) 
   { 
      cout << arr[i][j] << " "; 
   } 
     
   // Newline for new row 
   cout << endl; 
}