PAT 数组-06. 找出不是两个数组共有的元素(20)

[Jak-W]

#include <iostream>
using namespace std;

int main(){
	int a[20], b[20], c[40], n1, n2, count=0, flag=0;
	cin>> n1;
	for (int i=0; i<n1; i++){
		cin>> a[i];
	}
	cin>> n2;
	for (int i=0; i<n2; i++){
		cin>> b[i];
	}
	for (int i=0; i<n1; i++){
		for (int j=0; j<n2; j++){
			if (a[i] != b[j])
				flag = 1;
			else {
				flag = 0;
				break;
			}
		}
		if (flag == 1){
			c[count] = a[i];
			count++;
		}
		flag = 0;
	}
	for (int i=0; i<n2; i++){
		for (int j=0; j<n1; j++){
			if (b[i] != a[j])
				flag = 1;
			else {
				flag = 0;
				break;
			}
		}
		if (flag == 1){
			c[count] = b[i];
			count++;
		}
		flag = 0;
	}
	flag = 1; 
	for (int i=0; i<count; i++){
		for (int j=0; j<i; j++){
			if (c[i] != c[j])
				flag = 1;
			else{
				flag = 0;
				break;
			}
		}
		if (flag == 1){
			cout<< c[i];
			if (i != count-1)
				cout<<" ";
			else
				cout<<endl;
		}
		flag = 0;
	}
	return 0;
}

总是有一个测试通过不了，格式问题。

求帮助！

[Jak-W]

因为是初学，有好多不了解不知道的

[mewiteor]

c++求对称差集可以直接用std::set_symmetric_difference