solves arranging coins

Author: anishLearnsToCode

src/ArrangingCoins.java

@@ -0,0 +1,5 @@
+public class ArrangingCoins {
+    public int arrangeCoins(int n) {
+        return (int) Math.floor((Math.sqrt(8 * n + 1) - 1) / 2);
+    }
+}