package it.simone.google.code.jam2012;

import java.util.HashSet;
import java.util.Set;

public class RecycledNumber implements GoogleCodeExercise {

	int a = 0;
	int b = 0;
	Set<Couple> distinctCouple = null;
	long maxTime = 0;

	private class Couple {
		int x = 0;
		int y = 0;

		public Couple(int x, int y) {
			this.x = x;
			this.y = y;
		}

		@Override
		public int hashCode() {
			final int prime = 31;
			int result = 1;
			result = prime * result + getOuterType().hashCode();
			result = prime * result + x;
			result = prime * result + y;
			return result;
		}

		@Override
		public boolean equals(Object obj) {
			if (this == obj)
				return true;
			if (obj == null)
				return false;
			if (getClass() != obj.getClass())
				return false;
			Couple other = (Couple) obj;
			if (!getOuterType().equals(other.getOuterType()))
				return false;
			if (x == other.x && y == other.y)
				return true;
			if (x == other.y && y == other.x)
				return true;
			return false;
		}

		private RecycledNumber getOuterType() {
			return RecycledNumber.this;
		}

	}

	@Override
	public String execute(String line) {
		int result = 0;

		String[] data = line.split(" ");
		a = Integer.parseInt(data[0]);
		b = Integer.parseInt(data[1]);
		initialize();

		int n = a;
		//
		while (n <= b) {
			result += analize(n);
			n++;
//			if (n % 1000 == 0)
//				System.out.println(n);
		}

		System.out.println(result);
		return "" + result;
	}

	@Override
	public void initialize() {
		distinctCouple = new HashSet<Couple>();
	}

	private int analize(int number) {
		String numString = "" + number;
		initialize();
		for (int i = 1; i < numString.length(); i++) {
			int m = shift(numString, i);
			if (a <= number && number < m && m <= b) {
				Couple couple=new Couple(number,m);
				if (!distinctCouple.contains(couple))
					distinctCouple.add(couple);
			}
		}
		return distinctCouple.size();
	}

	private int shift(String numString, int posx) {

		String result = null;
		result = "" + numString.substring(posx) + numString.substring(0, posx);

		return Integer.parseInt(result.toString());
	}

}

package com.google.cj;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.StringTokenizer;

public class Recycling {
	public static void main(String[] args) {
		List<String> fileContents = IOHandler
				.readInput("/home/wzedan/cj/input/recycling.in");

		List<String> output = getPairs(fileContents);
		IOHandler.writeOutput(output, "/home/wzedan/cj/output/recycling.out");
	}

	private static List<String> getPairs(List<String> fileContents) {
		List<String> output = new ArrayList<String>();

		for (String line : fileContents) {
			StringTokenizer st = new StringTokenizer(line);
			String lowerLimit = st.nextToken();
			String upperLimit = st.nextToken();

			if (lowerLimit.length() == 1 && upperLimit.length() == 1) {
				output.add("" + 0);
				continue;
			}
			int maxShiftFactor = upperLimit.length() - 1;
			List<String> refCharacters = new ArrayList<String>();
			buildRefCharacters(lowerLimit, upperLimit, refCharacters);
			int noOfPairs = 0;
			List<Entry> shiftedList = new ArrayList<Entry>();
			for (int distance = 1; distance <= maxShiftFactor; distance++) {
				System.out.println("Distance = [" + distance + "]");
				shiftedList.addAll(shiftList(refCharacters, distance,
						Integer.valueOf(upperLimit) , Integer.valueOf(lowerLimit)));
				Set<Entry> s = new HashSet<Entry>(shiftedList);
				shiftedList.clear();
				shiftedList.addAll(s);
//				System.out.println("ShiftedList length [" + shiftedList.size() + "]");
//				System.out.println(shiftedList);
				
				
			}
//			System.out.println("No of pairs [" + shiftedList.size()
//					+ "] for lowerLimit [" + lowerLimit
//					+ "] and upperLimt [" + upperLimit + "]");

			output.add("" + shiftedList.size());
		}
		return output;
	}

	private static int findMatches(List<String> refCharacters,
			List<Entry> shiftedList) {
		int noOfPairs = 0;
//		for (int i = 0; i < shiftedList.size(); i++) {
//			if (refCharacters.contains(shiftedList.get(i).value)) {
//				noOfPairs +=1;
//			}
//		}
		return shiftedList.size();
	}

	private static void buildRefCharacters(String lowerLimit,
			String upperLimit, List<String> refCharacters) {
		for (int i = Integer.valueOf(lowerLimit); i <= Integer
				.valueOf(upperLimit); i++) {
			refCharacters.add("" + i);
		}
	}

	private static List<Entry> shiftList(List<String> refCharacters,
			int distance, int upperLimit , int lowerLimit) {
		List<Entry> shiftedList = new ArrayList<Entry>();
		for (int i = 0; i < refCharacters.size(); i++) {
			Entry entry = shift(refCharacters.get(i), i, distance, upperLimit , lowerLimit);
			if (entry != null) {
				shiftedList.add(entry);
			}
		}
		return shiftedList;
	}

	public static Entry shift(String n, int index, int distance, int upperLimit , int lowerLimit) {
		String nCopy = n;
		if (!hasAllSameDigit(n)) {
			//System.out.println("Shifting [" + n + "] distance [" + distance + "]");
			String shiftPattern = n
					.substring(n.length() - distance);
			int shiftPatternIndex = n.length() - shiftPattern.length();
					
			String modifiedN = n.substring(0, shiftPatternIndex);
			n = shiftPattern + modifiedN;
			if (n.startsWith("0")) {
				n = nCopy;
			}
			
			int nInteger = Integer.valueOf(n);
			// A <= n < m <= B
			if(nInteger < lowerLimit){
				n = nCopy;
			}
			if (nInteger > upperLimit) {
					n = nCopy;
			}
			if(Integer.valueOf(nCopy) > nInteger ){
				n = nCopy;
			}
		}
		return !n.equals(nCopy) ? new Entry(nCopy, n) : null;
	}

	private static boolean hasAllSameDigit(String n) {
		char c = n.charAt(0);
		for (int i = 0; i < n.length(); i++) {
			if (n.charAt(i) != c) {
				return false;
			}
		}
		return true;
	}
}
