逆序实现

给定数组  [1,2,3,4,5]，将其逆序排列成 [5,4,3,2,1]  非功能内部函数实现

PHP解法：

function reverse1($ss){
    list($left,$right) = [0,count($ss)-1];
    while ($left < $right){
        $tmp = $ss[$left];
        $ss[$left] = $ss[$right];
        $ss[$right] = $tmp;
        $left ++;
        $right --;
    }
    return $ss;
}

PYTHON解法：

def reverse(asser: list):
    left, right = 0, len(asser) - 1

    while left < right:
        asser[left], asser[right] = asser[right], asser[left]
        left += 1
        right -= 1

    return asser


print(reverse(asert))