Don't understand why i can't meet the last requirement

Question about the task

Resolved

package com.codegym.task.task08.task0809; import java.util.ArrayList; import java.util.Date; import java.util.LinkedList; import java.util.List; /* Time for 10,000 insertions */ public class Solution { public static void main(String[] args) { System.out.println(getInsertTimeInMs(new ArrayList())); System.out.println(getInsertTimeInMs(new LinkedList())); } public static long getInsertTimeInMs(List list) { // write your code here Date currentTime = new Date(); long msCurrentTime = currentTime.getTime(); insert10000(list); // write your code here return msCurrentTime; } public static void insert10000(List list) { for (int i = 0; i < 10000; i++) { list.add(0, new Object()); } } }

Measure how long it takes to perform 10,000 insertions on each list.
The getInsertTimeInMs method must return its execution time in milliseconds.

Requirements:

The program should display numbers on the screen.
The main method should call the getInsertTimeInMs method only twice.
The insert10000(List list) method must insert 10,000 items into the list.
The getInsertTimeInMs method should call the insert10000 method only once.
The getInsertTimeInMs method should return the time (in milliseconds) that it takes to perform 10,000 insertions on the list.

Comments (2)

Popular
New
Old

You must be signed in to leave a comment

Thomas

Level 41 , Bayreuth, Germany

4 October 2021, 16:40

solution

You just need to simulate a stop watch. Start the watch, then stop it (so here you just save a start time and a end time). The difference between those two time stamps is what you should return.

Victor Omoha

Level 8 , Raleigh , United States

4 October 2021, 17:13

thanks Thomas