Update README.md

Author: rcalago

core-java-modules/core-java-lang-math-3/README.md

@@ -17,4 +17,5 @@
 - [Validate if a String Is a Valid Geo Coordinate](https://www.baeldung.com/java-geo-coordinates-validation)
 - [Rotate a Vertex Around a Certain Point in Java](https://www.baeldung.com/java-rotate-vertex-around-point)
 - [Calculating the Power of Any Number in Java Without Using Math pow() Method](https://www.baeldung.com/java-calculating-the-power-without-math-pow)
+- [Solving Rod Cutting Problem in Java](https://www.baeldung.com/java-rod-cutting-problem)
 - More articles: [[<-- Prev]](/core-java-modules/core-java-lang-math-2)