Python 程序：交換兩個數字

編寫一個 Python 程序，使用臨時變量、按位運算符和算術運算符交換兩個數字。

交換兩個數字的 Python 程序

這個交換兩個數字的 python 程序幫助用戶輸入兩個數值。接下來，Python 使用臨時變量交換這兩個值。

a = float(input(" Please Enter the First Value a: "))
b = float(input(" Please Enter the Second Value b: "))

print("Before Swapping two Number: a = {0} and b = {1}".format(a, b))

temp = a
a = b
b = temp

print("After Swapping two Number: a = {0} and b = {1}".format(a, b))

Python 交換兩個數字輸出

 Please Enter the First Value a: 10
 Please Enter the Second Value b: 20
Before Swapping two Number: a = 10.0 and b = 20.0
After Swapping two Number: a = 20.0 and b = 10.0

在上面的 python 程序示例中，我們分配了 a = 10 和 b = 20

Temp = a–為 Temp 變量
賦值 Temp = 10

a = b–將 b 值賦給變量 a
a = 20

b =溫度–變量 b 的溫度值
b = 10

用函數交換兩個數字的 Python 程序

這個換號的程序和上面一樣，但是這次我們用函數分離邏輯。

def swap_numbers(a, b):
    temp = a
    a = b
    b = temp

    print("After: num1 = {0} and num2 = {1}".format(a, b))

num1 = float(input(" Please Enter the First Value : "))
num2 = float(input(" Please Enter the Second Value : "))

print("Before: num1 = {0} and num2 = {1}".format(num1, num2))
swap_numbers(num1, num2)

 Please Enter the First Value : 15
 Please Enter the Second Value : 25
Before: num1 = 15.0 and num2 = 25.0
After: num1 = 25.0 and num2 = 15.0

Python 使用算術運算符交換兩個數字

在這個 Python 示例中，我們將使用算術運算符來代替使用 temp 或第三個變量來交換兩個數字

a = float(input(" Please Enter the First Value a: "))
b = float(input(" Please Enter the Second Value b: "))

print("Before Swapping two Number: a = {0} and b = {1}".format(a, b))

a = a + b
b = a - b
a = a - b

print("After Swapping two Number: a = {0} and b = {1}".format(a, b))

用戶輸入的值是 a = 25 和 b = 45

a = a+b = 25 + 45 = 70

b = a-b = 70 -45 = 25

a = a-b = 70–25 = 45

Python 使用按位運算符交換兩個數字

這裡，我們使用位運算符來交換兩個數字。

a = int(input(" Please Enter the First Value : "))
b = int(input(" Please Enter the Second Value : "))

print("Before: a = {0} and b = {1}".format(a, b))

a = a^b
b = a^b
a = a^b

print("After: a = {0} and b = {1}".format(a, b))

使用按位運算符輸出

 Please Enter the First Value : 111
 Please Enter the Second Value : 222
Before: a = 111 and b = 222
After: a = 222 and b = 111