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Leetcode39.cpp
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71 lines (58 loc) · 1.92 KB
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// Leetcode39.cpp : This file contains the 'main' function. Program execution begins and ends there.
//
#include <iostream>
#include <vector>
#include <algorithm>
using namespace::std;
vector<vector<int>> all;
void subCombinationSum(vector<int>& lastTemp, vector<int>& candidates, int target, int firstIndex)
{
lastTemp.push_back(candidates[firstIndex]);
if (!target)
{
all.push_back(lastTemp);
return;
}
for (int i = firstIndex; i < candidates.size(); ++i)
{
if (candidates[i] <= target)
{
vector<int> temp = lastTemp;
subCombinationSum(temp, candidates, target - candidates[i], i);
}
else
{
lastTemp.pop_back();
break;
}
}
}
vector<vector<int>> combinationSum(vector<int>& candidates, int target)
{
sort(candidates.begin(), candidates.end());
for (int i = 0; i < candidates.size(); ++i)
{
vector<int> temp;
if (candidates[i] <= target)
subCombinationSum(temp, candidates, target - candidates[i], i);
else
break;
}
return all;
}
int main()
{
vector<int> candidates = { 2,3,5 };
int target = 8;
vector<vector<int>> res = combinationSum(candidates, target);
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