python - 通过条件语句打印用户输入的三个变量中的最大和第二大数

Question

嘿，我最近开始学习python。下面是求最大数的程序，我想知道如何打印第二大的数。提前致谢。

x=int(input("Enter the 1st number: \n"))
y=int(input("Enter the 2nd number: \n"))
z=int(input("Enter the 3rd number: \n"))

if x>y:
    f1=x
else:
    f1=y

if y>z:
    f2=y
else:
    f2=z
    
if f1>f2:
    print(str(f1)+" is greatest")
else:
    print(str(f2)+" is greatest")

Answer 1

您可以通过将输入添加到列表并对其进行排序来轻松获得第二大数字。

试试这个:

xyz = [x,y,z]
sorted_xyz = sorted(xyz)
largest = sorted_xyz[-1]
second_largest = sorted_xyz[-2]

因为您希望它与条件语句一起使用。你可以试试:

# check if x is the largest
if ( x >= y and x >= z ):
    print(str(x) + " is the greatest")
    # check if y is greater than z, if so then it is the second largest number.
    if ( y >= z ):
        print(str(y) + " is second greatest")
    else:
        print(str(z) + " is second greatest")

# check if y is the largest
if ( y >= x and y >= z ):
    print(str(y) + " is the greatest")
    # check if x is greater than z, if so then it is the second largest number.
    if ( x >= z ):
        print(str(x) + " is second greatest")
    else:
        print(str(z) + " is second greatest")

# check if z is the largest
if ( z >= x and z >= y ):
    print(str(z) + " is the greatest")
    # check if x is greater than y, if so then it is the second largest number.
    if ( x >= y ):
        print(str(x) + " is second greatest")
    else:
        print(str(y) + " is second greatest")