Create Two sum.cpp

Two sum.cpp

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+Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target.
+
+You may assume that each input would have exactly one solution, and you may not use the same element twice.
+
+You can return the answer in any order.
+
+
+
+Example 1:
+
+Input: nums = [2,7,11,15], target = 9
+Output: [0,1]
+Output: Because nums[0] + nums[1] == 9, we return [0, 1].
+Example 2:
+
+Input: nums = [3,2,4], target = 6
+Output: [1,2]
+Example 3:
+
+Input: nums = [3,3], target = 6
+Output: [0,1]
+
+
+class Solution {
+public:
+    vector<int> twoSum(vector<int>& nums, int target) {
+        int i,j;vector<int>s;
+        for(i=0;i<nums.size();i++)
+        {
+            for(j=i+1;j<nums.size();j++)
+            {
+                if(nums[i]+nums[j]==target)
+                { s.push_back(i);
+                s.push_back(j);}
+
+            }
+        }
+
+        return s;
+    }
+};