使用两个嵌套的 for 循环打印两个列表的公共元素

Question

我是 python 的新手，我有这段代码可以打印出两个序列之间的交集。

代码工作正常，但我正在尝试将其转换为嵌套循环类型的代码。我尝试了很多东西，但都没有用，你能帮帮我吗？

这是代码

print("This program finds the common elements of two lists")

sequenceOne = input("Please enter the space-separated elements of the first list: ")
sequenceTwo = input("Please enter the space-separated elements of the second list: ")

sequenceOne = sequenceOne.split()
sequenceTwo = sequenceTwo.split()
listOfIntersection = []

for i in sequenceOne:
     if i in sequenceTwo:
         sequenceTwo.remove(i)
         listOfIntersection.append(i)

print('The intersection of these two lists is {' +(", ".join(str(i) for i in listOfIntersection))+'}')

输出：

This program finds the intersection of two sets
Please enter the space-separated elements of the first set: 12 k e 34 1.5 12 hi 12 0.2
Please enter the space-separated elements of the second set: 1.5 hi 12 0.1 54 12 hi hi hi
The intersection of these two sets is {12, 1.5, 12, hi}

Answer 1

print("This program finds the intersection of two sets")

sequenceOne = input("Please enter the space-separated elements of the first set: ").split()
sequenceTwo = input("Please enter the space-separated elements of the second set: ").split()

listOfIntersection = [x for x in sequenceOne if x in sequenceTwo]

print('The intersection of these two sets is {' +(", ".join(str(i) for i in listOfIntersection))+'}')

此行替换嵌套的 for 循环和您拥有的条件并创建您的交集列表：listOfIntersection = [x for x in sequenceOne if x in sequenceTwo]

Answer 2

print("This program finds the intersection of two sets")

sequenceOne = input("Please enter the space-separated elements of the first set: ").split()
sequenceTwo = input("Please enter the space-separated elements of the second set: ").split()

print (set(sequenceOne).intersection(sequenceTwo))

intersection()方法returns两组sequenceOne和sequenceTwo

的交集

Answer 3

这是一个带有嵌套for循环的代码，它保留了重复的值。

print("This program finds the intersection of two sets")

sequenceOne = input("Please enter the space-separated elements of the first set: ")
sequenceTwo = input("Please enter the space-separated elements of the second set: ")

sequenceOne = sequenceOne.split()
sequenceTwo = sequenceTwo.split()
listOfIntersection = []

for i in sequenceOne:
     for j in sequenceTwo:
         if (i==j):
             listOfIntersection.append(i)

print('The intersection of these two sets is {' +(", ".join(str(i) for i in listOfIntersection))+'}')

这是第二个解决方案，它完全模仿了您第一个所做的：

print("This program finds the intersection of two sets")

sequenceOne = input("Please enter the space-separated elements of the first set: ")
sequenceTwo = input("Please enter the space-separated elements of the second set: ")

sequenceOne = sequenceOne.split()
sequenceTwo = sequenceTwo.split()
listOfIntersection = []

for i in sequenceOne:
     for j in sequenceTwo:
         if (i==j):
             listOfIntersection.append(i)
             sequenceTwo.remove(i)
             break
    

print('The intersection of these two sets is {' +(", ".join(str(i) for i in listOfIntersection))+'}')

使用两个嵌套的 for 循环打印两个列表的公共元素

Print common elements of two lists with two nested for loops

python

nested-loops

python-3.x