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Merged
merged 3 commits into from
Oct 4, 2020
Merged

Added C++ Solution #112

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62db505
Added C++ solution
Anshul1507 Oct 3, 2020
1a3d371
Update README.md
Anshul1507 Oct 3, 2020
5edfb1b
Update _31.cpp
Anshul1507 Oct 4, 2020
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2 changes: 1 addition & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -954,7 +954,7 @@ _If you like this project, please leave me a star._ ★
|34|[Search for a Range](https://leetcode.com/problems/search-for-a-range/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_34.java)||Medium|Array, Binary Search
|33|[Search in Rotated Sorted Array](https://leetcode.com/problems/search-in-rotated-sorted-array/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_33.java)||Medium|Binary Search
|32|[Longest Valid Parentheses](https://leetcode.com/problems/longest-valid-parentheses/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_32.java)||Hard|Stack, DP
|31|[Next Permutation](https://leetcode.com/problems/parents-permutation)|[Solution](../master/src/main/java/com/fishercoder/solutions/_31.java)||Medium|Array
|31|[Next Permutation](https://leetcode.com/problems/parents-permutation)|[Solution](../master/src/main/java/com/fishercoder/solutions/_31.java), [C++](../master/cpp/_31.cpp)||Medium|Array
|30|[Substring with Concatenation of All Words](https://leetcode.com/problems/substring-with-concatenation-of-all-words/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_30.java)||Hard| HashMap
|29|[Divide Two Integers](https://leetcode.com/problems/divide-two-integers/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_29.java)||Medium|
|28|[Implement strStr()](https://leetcode.com/problems/implement-strstr/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_28.java)||Easy| String
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33 changes: 33 additions & 0 deletions cpp/_31.cpp
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@@ -0,0 +1,33 @@
class Solution {
public:
void nextPermutation(vector<int>& nums) {

int i1;
int i2;
bool hasPermutation = false;

for(int i=nums.size()-1; i>0; i--){
if(nums[i-1]<nums[i]){
i1 = i-1;
i2 = i;
hasPermutation = true;
break;
}
}

if(hasPermutation){
int j=i2;
for(int i=nums.size()-1; i>i1; i--){
if(nums[i]>nums[i1]){
j=i;
break;
}
}
swap(nums[i1], nums[j]);
reverse(nums.begin()+i1+1, nums.end());
}else{
sort(nums.begin(), nums.end());
}

}
};