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Author: assassint2017

Arranging Coins/Arranging_Coins.cpp

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+// Runtime: 8 ms, faster than 56.82% of C++ online submissions for Arranging Coins.
+// Memory Usage: 8.3 MB, less than 71.43% of C++ online submissions for Arranging Coins.
+
+class Solution 
+{
+public:
+    int arrangeCoins(int n) 
+    {
+        if (n < 1)
+        {
+            return 0;    
+        }
+        
+        long long limit = ceil(sqrt(2.0 * n));
+        
+        for (long long i = limit; i >= 1; --i)
+        {
+            if ((1 + i) * i <= 2 * static_cast<long long>(n))
+            {
+                return i;
+            }
+        }
+        
+        return 1;
+    }
+};