Driver Code
public static void main ( String [ ] args ) { int [ ] [ ] matrix = { { 0 , - 2 , - 7 , 0 } , { 9 , 2 , - 6 , 2 } , { - 4 , 1 , - 4 , 1 } , { - 1 , 8 , 0 , - 2 } } ; maxSubmatrixSum ( matrix ) ; } }