Create 119. Pascal's Triangle II.cpp

Author: Yashmenaria1

119. Pascal's Triangle II.cpp

@@ -0,0 +1,15 @@
+class Solution {
+public:
+    vector<int> getRow(int rowIndex) {
+        vector<int> ans(rowIndex + 1);
+        long long temp = 1; 
+        ans[0] = ans[rowIndex] = 1;
+        
+        for (int i = 1, up = rowIndex, down = 1; i <= rowIndex; i++, up--, down++) {
+            temp = temp * up / down;
+            ans[i] = static_cast<int>(temp);
+        }
+        
+        return ans;
+    }
+};