插入排序

Array.prototype.insertionSort = function() {
   for(let i = 1; i < this.length; i += 1) {
      const temp = this[i];
      let j = i;
      while(j > 0) {
         if(this[j - 1] > temp) {
            this[j] = this[j - 1];
         } else {
            break;
         }
         j -= 1;
      }
      this[j] = temp;
   }
   console.log(this);
}
const arr = [5, 4, 3, 2, 1];
arr.insertionSort()