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Leetcode15.cpp
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90 lines (66 loc) · 2.06 KB
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// Leetcode15.cpp : This file contains the 'main' function. Program execution begins and ends there.
//
#include <iostream>
#include <vector>
#include <set>
#include <algorithm>
using namespace::std;
vector<vector<int>> threeSum(vector<int>& nums)
{
/*multiset<int> set1;
for (auto num : nums)
{
set1.insert(num);
cout << num << endl;
}
vector<int> sortNums;
for (auto num : set1)
{
sortNums.push_back(num);
cout << num << endl;
}*/
sort(nums.begin(), nums.end());
set<vector<int>> set2;
for (int i = 1; i <= nums.size() - 2; ++i)
{
int left = i - 1, right = i + 1;
while (left >= 0 && right <= nums.size() - 1)
{
if (nums[left] + nums[right] + nums[i] < 0)
{
right++;
}
else if (nums[left] + nums[right] + nums[i] > 0)
{
left--;
}
else
{
vector<int> each = { nums[left], nums[i], nums[right] };
set2.insert(each);
left--;
}
}
}
vector<vector<int>> all;
for (auto num : set2)
{
all.push_back(num);
}
return all;
}
int main()
{
vector<int> nums = { -1,0,1,2,-1,-4,-2,-3,3,0,4 };
vector<vector<int>> result = threeSum(nums);
std::cout << "Hello World!\n";
}
// Run program: Ctrl + F5 or Debug > Start Without Debugging menu
// Debug program: F5 or Debug > Start Debugging menu
// Tips for Getting Started:
// 1. Use the Solution Explorer window to add/manage files
// 2. Use the Team Explorer window to connect to source control
// 3. Use the Output window to see build output and other messages
// 4. Use the Error List window to view errors
// 5. Go to Project > Add New Item to create new code files, or Project > Add Existing Item to add existing code files to the project
// 6. In the future, to open this project again, go to File > Open > Project and select the .sln file