如何按长度对字符串数组进行排序？

def sort_strings_by_length(strings):
    # 计算字符串长度并存储在新的数据结构中
    string_lengths = [(len(s), s) for s in strings]

    # 使用快速排序对字符串长度进行排序
    quicksort(string_lengths)

    # 根据排序结果构建排序后的字符串数组
    sorted_strings = [s for _, s in string_lengths]

    return sorted_strings

def quicksort(arr):
    if len(arr) <= 1:
        return arr
    pivot = arr[len(arr) // 2][0]
    left = [x for x in arr if x[0] < pivot]
    middle = [x for x in arr if x[0] == pivot]
    right = [x for x in arr if x[0] > pivot]
    return quicksort(left) + middle + quicksort(right)

# 示例用法
strings = ["apple", "banana", "cat", "dog", "elephant"]
sorted_strings = sort_strings_by_length(strings)
print(sorted_strings)