-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathLeetcode46.cpp
More file actions
74 lines (62 loc) · 1.91 KB
/
Leetcode46.cpp
File metadata and controls
74 lines (62 loc) · 1.91 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
// Leetcode46.cpp : This file contains the 'main' function. Program execution begins and ends there.
//
#include <iostream>
#include <vector>
using namespace::std;
vector<vector<int>> all;
int fullSize = 0;
void recurtion(vector<int>& temp, vector<int>& nums)
{
if (temp.size() == fullSize)
all.push_back(temp);
for (int i = 0; i < nums.size(); ++i)
{
temp.push_back(nums[i]);
vector<int> numsTemp = nums;
numsTemp.erase(numsTemp.begin() + i);
recurtion(temp, numsTemp);
temp.pop_back();
}
}
void solve(vector<int>& nums, vector<vector<int>>& ans, int index)
{
if (index >= nums.size()) {
ans.push_back(nums);
return;
}
for (int j = index; j < nums.size(); j++) {
swap(nums[index], nums[j]);
solve(nums, ans, index + 1);
swap(nums[index], nums[j]);
}
}
vector<vector<int>> permuteBetter(vector<int>& nums) {
vector<vector<int>> ans;
int index = 0;
solve(nums, ans, index);
all = ans;
return ans;
}
vector<vector<int>> permute(vector<int>& nums)
{
fullSize = nums.size();
vector<int> temp;
recurtion(temp, nums);
return all;
}
int main()
{
vector<int> nums = { 1,2,3 };
//permute(nums);
permuteBetter(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