Question

我必须输入几个城市及其人口，并用城市名称打印最大和最小人口。

我已经找到了如何获取最大值并与国家一起打印，但是，我不知道如何获取最小值。

n =int(input("Enter the number of municipalities "))

for i in range(n):

    city = input("Enter the municipality: ")
    population = float(input("Enter the population: "))
    #processing information to calculate sum and max, min and range
    sum += population

    if max < population:
        max = population
        maxcity = city

print("The municipality with the highest population of", max, "million was " + maxcity)

对于最小值，我需要与最大值相同的结果。我可以在if循环中添加些什么来实现这一目标？我不允许使用内置的max（），min（）函数！

Answer 1

使用此：

max_value = 0
max_city = ''
min_value = 10**20
min_city = ''
for i in range(n):

    city = input("Enter the municipality: ")
    population = float(input("Enter the population: "))

    if max_value < population:
        max_value = population
        max_city = city

    if min_value > population:
        min_value = population
        min_city = city

print("The municipality with the highest population of", max_value, "million was " + max_city)
print("The municipality with the lowest population of", min_value, "million was " + min_city)

输出：

Enter the municipality: f
Enter the population: 10
Enter the municipality: g
Enter the population: 15
Enter the municipality: h
Enter the population: 80

The municipality with the highest population of 80.0 million was h
The municipality with the lowest population of 10.0 million was f

Answer 2

import sys

INT_max_population = sys.maxsize  
INT_MIN = -sys.maxsize-1

max_city = ''
min_city =''

max_population = INT_MIN
min_population = INT_max_population

n =int(input("Enter the number of municipalities "))

for i in range(n):
    city = input("Enter the municipality: ")
    population = float(input("Enter the population: "))

    if max_population < population:
        max_population = population
        max_city = city

    if min_population>population:
        min_population = population
        min_city = city

print("The municipality with the highest population of {} million was {} ".format(max_population, max_city))
print("The municipality with the lowest population of {}  million was {} ".format(min_population, min_city))

输出

Enter the number of municipalities 3

Enter the municipality: a

Enter the population: 1

Enter the municipality: b

Enter the population: 2

Enter the municipality: c

Enter the population: 3
The municipality with the highest population of 3.0 million was c 
The municipality with the lowest population of 1.0  million was a

输入人口数不同的城市，然后打印各自城市的最大，最小人口

2 个答案: