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 * and open the template in the editor.
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package year_2012.qualification;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Set;

/**
 *
 * @author paul
 * @date 14 Apr 2012
 */
public class QuestionC {

    private static Set<Integer> getCycle(int x) {

        String s = Integer.toString(x);
        Set<Integer> set = new HashSet<Integer>();
        set.add(x);
        for (int c = 1; c < s.length(); c++) {
            String t = s.substring(c).concat(s.substring(0, c));
            set.add(Integer.parseInt(t));
        }
        return set;
        
    }

    private static Set<Integer> mask(Set<Integer> set, int a, int b) {
        Set<Integer> result = new HashSet<Integer>();

        for (int x : set) {
            if (x >= a && x <= b) {
                result.add(x);
            }
        }
        
        return result;

    }


    public static void main(String[] args) throws FileNotFoundException, IOException {

        String question = "C";

//        String name = "large";
        String name = "small-attempt0";
//        String name = "test";

        String filename = String.format("%s-%s", question, name);

        BufferedReader input = new BufferedReader(
                new FileReader(String.format("/home/paul/Documents/code-jam/2012/qualification/%s.in",
                filename)));

        String firstLine = input.readLine();

        PrintWriter pw = new PrintWriter(new File(
                String.format("/home/paul/Documents/code-jam/2012/qualification/%s.out", filename)));


        int T = Integer.parseInt(firstLine);

        // Loop through test cases.
        for (int i = 0; i < T; i++) {

//             Read data.
            String[] tokens = input.readLine().split(" ");

//            int N = Integer.parseInt(input.readLine());

            int A = Integer.parseInt(tokens[0]);
            int B = Integer.parseInt(tokens[1]);

//            System.out.format("%d, %d\n", A, B);

            boolean[] used = new boolean[B+1];
            int total = 0;
            for (int n = A; n <= B; n++) {
                if (!used[n]) {
                    Set<Integer> set = mask(getCycle(n), A, B);
                    int k = set.size();
                    total += (k * (k-1))/2;
                    for (int m : set) {
                        used[m] = true;
                    }
                }
            }

            pw.format("Case #%d: %d\n", i + 1, total);
        }

        pw.close();

    }

}

package se.pathed.codejam.practice.recycled;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;

public class RecycledNumbers {

	public static void main(String[] args) throws NumberFormatException, IOException{
		new RecycledNumbers().run();
	}


	public File getFileFromDisk(String fileName){
		String dataFolder = "C:\\Users\\Patrik\\workspaces\\codejam\\Practis\\data\\";
		return new File(dataFolder + fileName);
	}
	
	public static class Problem {
		int first;
		int last;
	}
	
	public Problem[] parseInput() throws NumberFormatException, IOException{
		Problem[] probs;
		File f = getFileFromDisk("C-small-attempt0.in");
		FileReader fReader = new FileReader(f);
		BufferedReader reader = new BufferedReader(fReader);
		
		int numCases = Integer.parseInt(reader.readLine());
		probs = new Problem[numCases];
		
		for(int i = 0; i < numCases; i++){
			String[] res = reader.readLine().split(" ");
			Problem p = new Problem();
			p.first = Integer.parseInt(res[0]);
			p.last = Integer.parseInt(res[1]);
			probs[i] = p;
		}
		
		reader.close();
		return probs;
	}
	
	private void run() throws NumberFormatException, IOException {
		Problem[] problems = parseInput();
		
		File outputFile = getFileFromDisk("out.txt");
		if( outputFile.exists()) outputFile.delete();
		PrintWriter outFile = new PrintWriter(outputFile);
		
		for(int i = 0; i < problems.length; i++){
			int solution = solve(problems[i]);
			outFile.println("Case #" + (i+1) + ": " + solution);
		}
		outFile.flush();
	}
	
	private int solve(Problem p){
		int first = p.first;
		int last = p.last;
		
		int count = 0;
		HashMap<Integer,Integer> found = new HashMap<Integer,Integer>();
		
		int[] foundInts = new int[Integer.toString(p.last).length() ]; 
		
		for(int x = first; x <= last; x++){
			String s = Integer.toString(x);
			int foundCount = 0;
			if(s.length() > 1){
				//System.out.println("Testing value: " + x);
				for(int v=1; v < s.length(); v++){
					String next = s.substring(v) + s.substring(0,v);
					//System.out.println("Testing value: " + next);
					if(next.charAt(0) != '0'){
						int val = Integer.parseInt(next);
						if( val <= last && val > x){
							// Already submitted
							boolean f = false;
							for(int i = 0; i < foundCount; i++){
								if( foundInts[i] == val){
									f = true;
								}
							}
							if(f != true){
								foundInts[foundCount] = val;
								foundCount++;
								if( found.containsKey(val) && found.get(val) == x){
									System.out.println("ERROR found duplicate: " + val);
									count++;
								}
								else {
									found.put(val, x);
									count++;
								}
							}
						}
					}
				}
			}
		}
		return count;
	}
}
