python - Python中使用列表列表进行冒泡排序的顺序不正确

Question

我的Python程序中的冒泡排序算法似乎没有完成排序或按正确的顺序排序。

def sort():
    listsImport()
    for passnum in range(len(numberLists)-1, 0, -1):
        for i in range(passnum):
            if numberLists[i][1] > numberLists[i+1][1]:
                temp = numberLists[i]
                numberLists[i] = numberLists[i+1]
                numberLists[i+1] = temp
    print(numberLists)

号码列表如下所示:
[['你好','5','1'],['再见','12','8'],['致敬','14,'9']........ …………]
它应该按列表中的第二个元素排序。
谢谢!

Answer 1

您需要将值转换为整数:

def sort():
  numberLists = [['hello','5','1'], ['goodbye', '12', '8'], ['salutations', '14','9']]
  for passnum in range(len(numberLists)-1, 0, -1):
     for i in range(passnum):
        if int(numberLists[i][1]) > int(numberLists[i+1][1]):
            temp = numberLists[i]
            numberLists[i] = numberLists[i+1]
            numberLists[i+1] = temp
  return numberLists

输出:

[['hello', '5', '1'], ['goodbye', '12', '8'], ['salutations', '14', '9']]