如何将数组 ['a', 'b', 'c', 'd', 'e'] 中的 index==3移动到index==1中, 变成 ['a', 'd', 'b', 'c', 'e']
要求: 代码越简短越好
const arr = ['a', 'b', 'c', 'd', 'e'];
arr.splice(1, 0, arr.splice(3, 1)[0]);
###let arr=['a', 'b', 'c', 'd', 'e'] ; arr.splice(1,3,'d','b','c')
###function move([a, b, c, d, e, ...rest]) {
return [a, d, b, c, e, ...rest]
}
###function mirrorWrap(arr, sourceIndex) {
var t = arr[sourceIndex];
var mirrorIndex = arr.length - sourceIndex - 1;
arr[sourceIndex] = arr[mirrorIndex];
arr[mirrorIndex] = t;
return arr;
}
// ["a", "d", "c", "b", "e"]
mirrorWrap(['a', 'b', 'c', 'd', 'e'], 3)