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Commit f1f5079

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✨ Day 21; Week 3 ✔️
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‎README.md‎

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6. [Sort List](https://leetcode.com/explore/challenge/card/october-leetcoding-challenge/560/week-2-october-8th-october-14th/3493/) ➡️ [CPP Solution](Week2/sortList.cpp)
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7. [House Robber II](https://leetcode.com/explore/challenge/card/october-leetcoding-challenge/560/week-2-october-8th-october-14th/3494/) ➡️ [CPP Solution](Week2/rob.cpp)
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## Week 3 🚧
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## Week 3 ✅
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1. [Rotate Array](https://leetcode.com/explore/challenge/card/october-leetcoding-challenge/561/week-3-october-15th-october-21st/3496/) ➡️ [CPP Solution](Week3/rotate.cpp)
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2. [Search a 2D Matrix](https://leetcode.com/explore/challenge/card/october-leetcoding-challenge/561/week-3-october-15th-october-21st/3497/) ➡️ [CPP Solution](Week3/searchMatrix.cpp)
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3. [Repeated DNA Sequences](https://leetcode.com/explore/challenge/card/october-leetcoding-challenge/561/week-3-october-15th-october-21st/3498/) ➡️ [CPP Solution](Week3/findRepeatedDnaSequences.cpp)
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4. [Best Time to Buy and Sell Stock IV](https://leetcode.com/explore/challenge/card/october-leetcoding-challenge/561/week-3-october-15th-october-21st/3499/) ➡️ [CPP Solution](Week3/maxProfit.cpp)
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5. [Minimum Domino Rotations For Equal Row](https://leetcode.com/explore/challenge/card/october-leetcoding-challenge/561/week-3-october-15th-october-21st/3500/) ➡️ [CPP Solution](Week3/minDominoRotations.cpp)
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6. [Clone Graph](https://leetcode.com/explore/challenge/card/october-leetcoding-challenge/561/week-3-october-15th-october-21st/3501/) ➡️ [CPP Solution](Week3/cloneGraph.cpp)
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7. [Asteroid Collision](https://leetcode.com/explore/challenge/card/october-leetcoding-challenge/561/week-3-october-15th-october-21st/3502/) ➡️ [CPP Solution](Week3/asteroidCollision.cpp)
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## Week 4 🚧

‎Week3/asteroidCollision.cpp‎

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class Solution {
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public:
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vector<int> asteroidCollision(vector<int>& asteroids) {
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stack<int> s;
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for(int x: asteroids) {
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if(x > 0) {
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s.push(x);
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} else {
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while(!s.empty() && s.top() > 0 && s.top() < abs(x))
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s.pop();
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if(s.empty() || s.top() < 0)
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s.push(x);
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else if(s.top() == abs(x))
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s.pop();
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}
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}
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vector<int> ans;
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while(!s.empty()) {
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ans.push_back(s.top());
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s.pop();
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}
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reverse(ans.begin(), ans.end());
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return ans;
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}
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};

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