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package com.easyProblem;
/*
* ÏÖÓÐn¸öÀÏÊóΧ³ÉһԲȦ£¬ÓÐһֻè´ÓÈÎÒâλÖÿªÊ¼³ÔÀÏÊó£¬Ã¿´Î¶¼¸ôÒ»¸öÀÏÊó³Ô£¬
* Çë¸ø³ö×îºóÒ»¸öÀÏÊóµÄ±àºÅ£¿ÌâĿҪÇóÊÇÈθøÀÏÊóÊýn£¬Êä³öè×îºó³ÔµÄÀÏÊóµÄ±àºÅ
*/
public class CatEatMouseProblem {
private int[] m;

public static void main(String[] args) {
CatEatMouseProblem cm = new CatEatMouseProblem();
System.out.println("=======µÍЧµÄ·½·¨========");
long startTime =System.currentTimeMillis();
System.out.println(cm.easyWork(1111178));
long endTime=System.currentTimeMillis();
System.out.println("ºÄʱ£º" + (endTime-startTime));

System.out.println("=======¸Ä½øµÄ·½·¨========");
startTime =System.currentTimeMillis();
System.out.println(cm.betterWork(1111178));
endTime=System.currentTimeMillis();
System.out.println("ºÄʱ£º" + (endTime-startTime));

}
public int easyWork(int n){
m = new int[n];

int mouse = n;
int flag = 0;

m[0] = 1;
mouse--;

while(mouse>1){
flag = next(next(flag));
m[flag] = 1;
mouse--;
}
return next(flag)+1;
}

public int next(int start){
for(int i=start+1; i<start+m.length; i++){
int pos = i%(m.length);
if(m[pos]!=1) {
return pos;
}
}
return -1;
}

public int betterWork(int n){
int m = 2;
int s = 0;
for(int i=2; i<=n-1; i++) s=(s+m)%i;
return s+2;
}

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