Java如何反转LinkedList元素的顺序?
为了反转LinkedList元素的顺序,我们可以使用class的reverse(List<?> list)静态方法java.util.Collections。这是示例:
package org.nhooo.example.util;import java.util.LinkedList;
import java.util.Collections;
public class LinkedListReverseOrder {
public static void main(String[] args) {
LinkedList<String> grades = new LinkedList<>();
grades.add("A");
grades.add("B");
grades.add("C");
grades.add("D");
grades.add("E");
grades.add("F");
System.out.println("Output in original order:");
System.out.println("=========================");
for (String grade : grades) {
System.out.println("Grade = " + grade);
}
// 颠倒链表对象中的元素顺序。
Collections.reverse(grades);
System.out.println("Output in reverse order:");
System.out.println("=========================");
for (String grade : grades) {
System.out.println("Grade = " + grade);
}
}
}
这是程序的输出:
Output in original order:=========================
Grade = A
Grade = B
Grade = C
Grade = D
Grade = E
Grade = F
Output in reverse order:
=========================
Grade = F
Grade = E
Grade = D
Grade = C
Grade = B
Grade = A
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