001package algs13.xbacktrack.xframework; 002 003/** 004 * An unsuccessful solution to a backtracking problem. 005 */ 006public final class XBacktrackFailure implements XBacktrackResult { 007 @Override 008 public boolean isSuccess() { 009 return false; 010 } 011 012 @Override 013 public String toString() { 014 return "No solution!"; 015 } 016}