static void rotateMatrix ( int matrix [ ] [ ] , int k ) {
  int temp [ ] = new int [ M ] ;
  k = k % M ;
  for ( int i = 0 ;
  i < N ;
  i ++ ) {
    for ( int t = 0 ;
    t < M - k ;
    t ++ ) temp [ t ] = matrix [ i ] [ t ] ;
    for ( int j = M - k ;
    j < M ;
    j ++ ) matrix [ i ] [ j - M + k ] = matrix [ i ] [ j ] ;
    for ( int j = k ;
    j < M ;
    j ++ ) matrix [ i ] [ j ] = temp [ j - k ] ;
  }
}

static void rotateMatrix ( int matrix [ ] [ ] , int k ) { int temp [ ] = new int [ M ] ; k = k % M ; for ( int i = 0 ; i < N ; i ++ ) { for ( int t = 0 ; t < M - k ; t ++ ) temp [ t ] = matrix [ i ] [ t ] ; for ( int j = M - k ; j < M ; j ++ ) matrix [ i ] [ j - M + k ] = matrix [ i ] [ j ] ; for ( int j = k ; j < M ; j ++ ) matrix [ i ] [ j ] = temp [ j - k ] ; } }
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