The Joseph Ring problem is about ,n A circle of individuals , From k Individuals start counting in one direction , Report to No m Personal time , The first m Personal listing , From the next person next to you ( Not listed ) Start , Find the order of people in the whole ring . Here is what I use java Solution to the problem .

 class JosephLoop
{ //n Is the number of people in the ring ,m For the number of people who count each time ,k Is the starting position of the count 0~n-1
int n,m,k;
int[] persons;
int[] seq;
JosephLoop(int n, int k, int m){
this.n = n;
this.m = m;
this.k = k;
persons = new int[n];
seq = new int[n];
public void showSeq(){
for (int x:seq )
System.out.print(x+" ");
public void calcLoop(){
for(int j=0;j<n;j++)
int index=k;
for (int i=0; i<m ; index++)
if (persons[index%n]==0)
persons[(index-1)%n] = 1;
seq[j] = (index-1)%n;
k = (index)%n;
 class LoopTest
public static void main(String[] args)
JosephLoop jose = new JosephLoop(12,5,4); //n,k,m

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