Java如何对LinkedList元素进行排序?
要排序元素,LinkedList可以使用Collections.sort(List<T> list)静态方法。排序的默认顺序是降序。
package org.nhooo.example.util;import java.util.LinkedList;
import java.util.Collections;
public class LinkedListSort {
public static void main(String[] args) {
LinkedList<String> grades = new LinkedList<>();
grades.add("E");
grades.add("C");
grades.add("A");
grades.add("F");
grades.add("B");
grades.add("D");
System.out.println("Before sorting:");
System.out.println("===============");
for (String grade : grades) {
System.out.println("Grade = " + grade);
}
// 根据链接列表的数据对元素进行排序
// 自然秩序。
Collections.sort(grades);
System.out.println("After sorting:");
System.out.println("===============");
for (String grade : grades) {
System.out.println("Grade = " + grade);
}
}
}
该程序的结果是:
Before sorting:===============
Grade = E
Grade = C
Grade = A
Grade = F
Grade = B
Grade = D
After sorting:
===============
Grade = A
Grade = B
Grade = C
Grade = D
Grade = E
Grade = F
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