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Leetcode31.cpp
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73 lines (61 loc) · 1.84 KB
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// Leetcode31.cpp : This file contains the 'main' function. Program execution begins and ends there.
//
#include <iostream>
#include <vector>
using namespace::std;
void nextPermutation(vector<int>& nums)
{
if (1 == nums.size())
return;
for (int i = nums.size() - 1; i != 0; --i)
{
if (nums[i - 1] < nums[i])
{
int j = i, k = nums.size() - 1;
while (j < k)
{
int temp = nums[j];
nums[j] = nums[k];
nums[k] = temp;
++j;
--k;
}
j = i;
while (j < nums.size())
{
if (nums[i - 1] < nums[j])
{
int temp = nums[i - 1];
nums[i - 1] = nums[j];
nums[j] = temp;
return;
}
++j;
}
}
}
int i = 0, j = nums.size() - 1;
while (i < j)
{
int temp = nums[i];
nums[i] = nums[j];
nums[j] = temp;
++i;
--j;
}
}
int main()
{
vector<int> nums = { 2,3,1 };
nextPermutation(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