約瑟夫問題（java版）
package hello;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class YueSeFu {
public static void main(String[] args) {
List<Page> list = new ArrayList<>();
for (int i = 0; i < 41; i++) {
Page page = new Page();
page.setData(i+1);
page.setNextPage(i+1);
list.add(page);
}
list.get(list.size()-1).setNextPage(0);
method1(list, 3,list.size());
}
public static void method1(List<Page> arr,int num,int totalPerson ){
int flag = 0;
int count = 0;
while (count!=totalPerson) {
for (int i = 0; i < arr.size(); i++) {
if (arr.get(i).getNextPage()==-1) {
continue;
}
flag += 1;
if (flag % num == 0) {
arr.get(i).setNextPage(-1);
count+=1;
System.out.print(arr.get(i).getData()+"--");
}
}
}
}
}
Page類
package hello;
public class Page {
private Integer data;
private Integer nextPage;
public Integer getData() {
return data;
}
public void setData(Integer data) {
this.data = data;
}
public Integer getNextPage() {
return nextPage;
}
public void setNextPage(Integer nextPage) {
this.nextPage = nextPage;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((data == null) ? 0 : data.hashCode());
result = prime * result + ((nextPage == null) ? 0 : nextPage.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Page other = (Page) obj;
if (data == null) {
if (other.data != null)
return false;
} else if (!data.equals(other.data))
return false;
if (nextPage == null) {
if (other.nextPage != null)
return false;
} else if (!nextPage.equals(other.nextPage))
return false;
return true;
}
@Override
public String toString() {
return "Page [data=" + data + ", nextPage=" + nextPage + "]";
}
}