[Level1] 삼총사 (C++/Python)

C++)

#include <string>
#include <vector>

using namespace std;

int solution(vector<int> number) {
    int answer = 0;
    for (int i = 0; i < number.size(); i++) {
        for (int j = i + 1; j < number.size(); j++) {
            for (int k = j + 1; k < number.size(); k++)
                if (number[i]+number[j]+number[k] == 0) answer++;
        }
    }
    return answer;
}

 

 

 

 

Python)

def solution(number):
    length = len(number)
    ans = 0
    
    for i in range(length):
        for j in range(i+1, length):
            for k in range(j+1, length):
                if number[i] + number[j] + number[k] == 0:
                    ans += 1
    return ans