~~~ function selectionSort(arr) { var temp; var minIndex; var minValue; for(var i = 0;i<=arr.length-1;++i){ minIndex = i; //在后面的剩下的數組中找最小值 for (var j = i+1;j<=arr.length-1;++j){ if(arr[j]<arr[minIndex]){ minIndex = j; minValue = array[minIndex]; } } //將最小值依次排放從左到右排放 temp = arr[i]; arr[i] = arr[minIndex]; arr[minIndex] = temp; } return arr; } var array = [7,3,5,6,8,9]; selectionSort(array); ~~~ ``` function selectionSort(arr) { for (let i = 0, len = arr.length, min; i < len; i++) { min = arr[i] for (let j = i + 1; j < len; j++) { if (arr[j] < min) { let c = min min = arr[j] arr[j] = c } } arr[i] = min } return arr } ```