《算法竞赛入门经典》练习题:

编程过程中考虑个位、十位...表达问题
C++:
#include<stdio.h>
#include<iostream>
#include<math.h>
using namespace std;
int main()
{
int a, b, c;
for (int i = 150; i <= 999; i++)
{
a = i / 100; //百位数
b = (i - a * 100) / 10; //十位数
c = i - a * 100 - b * 10;//个位数
if (i == a*a*a + b*b*b + c*c*c)
//if(i==pow((float)a,3)+pow((float)b,3)+pow((float)c,3))
{
cout <<i<< "是水仙花数"<<endl;
}
}
return 0;
}
Python:
输出N位的水仙花问题:
def f(n):
"""
:param n: 输出n 位的水仙花
:return:
"""
list = []
for i in range(pow(10, n-1), pow(10, n)):
list = map(int, str(i))
sum = 0
for j in range(0, len(list)):
sum = sum + pow(list[j], n)
if sum == i:
print i
if __name__ == "__main__":
n = int(raw_input("input n:"))
f(n)
多级水仙花问题优化: