1012 数字分类 (20 分)

题目链接

1. 定义一个A数组用来存储结果
2. 定义一个flag数组用来标记每组数据是否存在。

c++代码

#include <iostream>
#include<string>
#include<vector>
#include<sstream>
#include <iomanip> 
using namespace std;

int main() {
	int n, in;
	int A1 = 0, A2 = 0, A3 = 0, A5 = 0;
	double A4 = 0; int A4T = 0;
	cin >> n;
	int flag = 1;
	int A2T = 0;
	while (n--) {
		cin >> in;
		if (in % 5 == 0 && in % 2 == 0)	//能被 5 整除的数字中所有偶数的和；
			A1 += in;
		else if (in % 5 == 1) {			//被5整除后余1的数字交错求和，n1-n2+n3-n4...
			A2T++;
			in = in * flag;
			A2 += in;
			flag *= -1;
		}
		else if (in % 5 == 2) {			//能被5整除余2的树的个数
			A3++;
		}
		else if (in % 5 == 3) {			//被5整除后余3的树的平均值，保留一位小数
			A4 += in;
			A4T++;
		}
		else if (in % 5 == 4) {			//被5整除余4中数字最大的数字
			if (in > A5)
				A5 = in;
		}
	}
	if (A1 != 0)
		cout << A1 << " ";
	else
		cout << "N ";
	if (A2T == 0)
		cout << "N ";
	else
		cout << A2 << " ";
	if (A3 == 0)
		cout << "N ";
	else
		cout << A3 << " ";
	if (A4 == 0)
		cout << "N ";
	else
		printf("%.1f ", A4 / A4T);
	if (A5 == 0)
		cout << "N" << endl;
	else
		cout << A5 << endl;
	return 0;
}
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python3代码

def main():
    s = input().split()
    num = list(map(int,s))
    A = [0,0,0,0,0,0]
    flag = [1,0,0,0,0,0,0]
    for i in range(1,len(num)):

        if(num[i] % 10 ==0):
            A[1] += int(num[i])
            flag[1] = 1
        elif(num[i]% 5 == 1):
            A[2] += num[i]*flag[0]
            flag[0] *= -1
            flag[2] = 1
        elif(num[i]%5==2):
            A[3] += 1
            flag[3] = 1
        elif(num[i] % 5 == 3):
            A[4] += num[i]
            flag[4] = 1
            A[0] += 1
        elif(num[i] % 5 == 4):
            flag[5] = 1
            if(num[i] > A[5]):
                A[5] = num[i]

    if(flag[1] == 1):
        print(A[1],end=' ')
    else:
        print('N',end= ' ')

    if(flag[2] == 1):
        print(A[2], end= ' ')
    else:
        print('N', end= ' ')
    if(flag[3] == 1):
        print(A[3],end= ' ')
    else:
        print('N',end= ' ')
    if(flag[4] == 1):

        print(round(float(A[4])/A[0],1),end= ' ')
    else:
        print('N',end= ' ')
    if(flag[5] == 1):
        print(A[5])
    else:
        print('N')


main()
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转载于:https://juejin.im/post/5ce55a3851882572e42301e9