Григорий Боев

function MAX_THE_SAME(input, search) {
  if (!input) return "Нет данных";
  if (!(input instanceof Array)) return "Выбрана одна ячейка";
  var current;
  var count = 0;
  var max = 0;
  for(var x=0; x<input[0].length; x++) {
    current = null;
    for(var y=0; y<input.length; y++) {
      var val = input[y][x];
      if (!val && val !== 0 || search && val!=search) {
        current = null;
        continue;
      }
      val = val.toString();
      if (current !== val) {
        current = val;
        count = 0;
      }
      count++;
      if (max < count) max = count;
    }
  }
  return max;
}