Python 程式用於根據子列表中的第二個元素對列表進行排序。

在本文中，我們將根據子列表中的第二個元素對列表進行排序。假設我們有以下列表 −

[['jack', 50], ['antony', 20], ['jones', 87], ['gary', 70], ['tom', 90], ['sam', 110], ['warner', 65]]

輸出應如下所示，即根據第二個元素排序 −

[['antony', 20], ['jack', 50], ['warner', 65], ['gary', 70], ['jones', 87], ['tom', 90], ['sam', 110]]

Python 程式用於根據子列表中的第二個元素對列表進行排序，此方法採用 sort() 方法

示例

# Custom Function
def SortFunc(sub_li):
	sub_li.sort(key = lambda x: x[1])
	return sub_li
	
# Driver Code
subList =[['jack', 50], ['antony', 20], ['jones', 87], ['gary', 70], ['tom', 90], ['sam', 110], ['warner', 65]]
print("Unsorted List = \n",subList)
print("\nSorted List according to the second elemnt in the sublist =\n ",SortFunc(subList))

輸出

Unsorted List = 
[['jack', 50], ['antony', 20], ['jones', 87], ['gary', 70], ['tom', 90], ['sam', 110], ['warner', 65]]

Sorted List according to the second elemnt in the sublist =
  [['antony', 20], ['jack', 50], ['warner', 65], ['gary', 70], ['jones', 87], ['tom', 90], ['sam', 110]]

Python 程式用於根據子列表中的第二個元素對列表進行排序，此方法採用氣泡排序

示例

# Custom Function
def SortFunc(subList):
	l = len(subList)
	for i in range(0, l):
		for j in range(0, l-i-1):
			if (subList[j][1] > subList[j + 1][1]):
				temp = subList[j]
				subList[j]= subList[j + 1]
				subList[j + 1]= temp
	return subList
# Driver Code
subList =[['jack', 50], ['antony', 20], ['jones', 87], ['gary', 70], ['tom', 90], ['sam', 110], ['warner', 65]]
print("Unsorted List = \n",subList)
print("\nSorted List according to the second elemnt in the sublist =\n ",SortFunc(subList))

輸出

Unsorted List = 
 [['jack', 50], ['antony', 20], ['jones', 87], ['gary', 70], ['tom', 90], ['sam', 110], ['warner', 65]]

Sorted List according to the second elemnt in the sublist =
 [['antony', 20], ['jack', 50], ['warner', 65], ['gary', 70], ['jones', 87], ['tom', 90], ['sam', 110]]

Python 程式用於根據子列表中的第二個元素對列表進行排序，此方法採用 sorted() 方法

示例

# Custom Function
def SortFunc(subList):

	return(sorted(subList, key = lambda a: a[1]))

# Driver Code
subList =[['jack', 50], ['antony', 20], ['jones', 87], ['gary', 70], ['tom', 90], ['sam', 110], ['warner', 65]]
print("Unsorted List = \n",subList)
print("\nSorted List according to the second elemnt in the sublist =\n ",SortFunc(subList))

輸出

Unsorted List = 
 [['jack', 50], ['antony', 20], ['jones', 87], ['gary', 70], ['tom', 90], ['sam', 110], ['warner', 65]]
Sorted List according to the second elemnt in the sublist =
  [['antony', 20], ['jack', 50], ['warner', 65], ['gary', 70], ['jones', 87], ['tom', 90], ['sam', 110]]

AmitDiwan

更新於: 11-Aug-2022

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