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I took some time to understand the game also played 2 minute and in last 15 minute I wrote this way exactly so there could be some bug
- MaYanK July 29, 2010class Point{ int id; Point left; Point right; Point top; Point bottom; boolean visit; } public boolean dfsVisit(Point start,Point end ,String path){ start.visit = true; if(start.id==end.id) { System.out.println("Path:"+path); return true; } if(isValid(start.left) && dfsVisit(start.left,end,start.id+path) return true; if(isValid(start.right) && dfsVisit(start.right,end,start.id+path) return true; if(isValid(start.top) && dfsVisit(start.top,end,start.id+path) return true; if(isValid(start.bottom) && dfsVisit(start.bottom,end,start.id+path) return true; return false; } public boolean isValid(Point p) { if(p==null) return false; if(p.visit) return false; return true; }