Driver Code
let mat = [ [ 7 , 0 , 3 , 1 , 8 , 1 , 3 ] , [ 0 , 4 , 0 , 1 , 0 , 4 , 0 ] , [ 3 , 1 , 8 , 3 , 1 , 0 , 7 ] ] ; let minChanges = countChanges ( mat , 3 , 7 ) ; document . write ( minChanges ) ;