15.cpp

#include <vector>

#include "Jutil.h"
using namespace std;

#define KNRM "\x1B[0m"
#define KRED "\x1B[31m"
#define KGRN "\x1B[32m"

class Solution {
   public:
    vector<vector<int>> threeSum(vector<int>& nums) {
        int n = nums.size();
        vector<vector<int>> res;
        sort(nums.begin(), nums.end());
        for (int i = 0; i < n; i++) {
            int target = -nums[i];
            int j = i + 1;
            int k = n - 1;
            while (j < k) {
                int sum = nums[j] + nums[k];
                if (sum == target) {
                    res.push_back({nums[i], nums[j], nums[k]});
                    while (j + 1 < n && nums[j + 1] == nums[j]) {
                        j++;
                    }
                    j++;
                    k--;
                } else if (sum < target) {
                    j++;
                } else {
                    k--;
                }
            }
            while (i + 1 < n && nums[i + 1] == nums[i]) {
                i++;
            }
        }
        return res;
    }
};

int main() {
    string problemName = "15";
    auto begin = jtimer();
    Solution sol;
    ifstream file_in("testcases/" + problemName + "_in.txt");
    ifstream file_out("testcases/" + problemName + "_out.txt");
    bool allPass = true;
    int caseCount = 0;
    int passCount = 0;
    string line_in;
    string line_out;
    while (getline(file_in, line_in)) {
        auto nums = jread_vector(line_in);
        auto res = sol.threeSum(nums);
        getline(file_out, line_out);
        auto ans = jread_vector2d(line_out);
        printf("Case %d", ++caseCount);
        if (res.size() != ans.size()) {
            printf(" %s(WRONG)", KRED);
            allPass = false;
        } else {
            sort(res.begin(), res.end());
            sort(ans.begin(), ans.end());
            if (res != ans) {
                printf(" %s(WRONG)", KRED);
                allPass = false;
            } else {
                passCount++;
                printf(" %s(PASS)", KGRN);
            }
        }
        printf("\n%s", KNRM);
        jprint(res, "res");
        jprint(ans, "ans");
        printf("\n");
    }
    if (allPass) {
        printf("%sALL CORRECT [%d/%d]\n%s", KGRN, passCount, caseCount, KNRM);
    } else {
        printf("%sWRONG ANSWER [%d/%d]\n%s", KRED, passCount, caseCount, KNRM);
    }
    auto end = jtimer();
    jprint_time(begin, end);
    return 0;
}