Patterns in JavaA tale of three patternsby Kevlin HenneyListing 1. Iteration over a sorted binary tree using recursive descent in an enumeration method.

A timetabling problem is formulated as a large integer linear programming problem in 0-1 variables. A solution method based on Lagrangean relaxation coupled with subgradient optimization is presented.

Additionally, efforts have been made to extend the feasibility pump framework to general mixed integer variables, demonstrating its versatility beyond purely binary problems [4].