[Javascript] 배열(array)내의 최솟값 및 최댓값 구하기

References 

Function.prototype.apply()

Source

/* min/max number in an array */

var numbers = [5, 6, 2, 3, 7];

/* using Math.min/Math.max apply */

var max = Math.max.apply(null, numbers); /* This about equal to Math.max(numbers[0], ...)

                                            or Math.max(5, 6, ...) */

var min = Math.min.apply(null, numbers);

/* vs. simple loop based algorithm */

max = -Infinity, min = +Infinity;

for (var i = 0; i < numbers.length; i++) {

  if (numbers[i] > max) {

    max = numbers[i];

  }

  if (numbers[i] < min) {

    min = numbers[i];

  }

}