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Question about the task

Time for 10,000 insertions

Java Syntax, Level 8, Lesson 6

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i need guidance please

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.

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 insert10000(list); // write your code here long StartTime = System.currentTimeMillis(); insert10000(list); long timeDifference = System.currentTimeMillis() - StartTime; return timeDifference; } public static void insert10000(List list) { for (int i = 0; i < 10000; i++) { list.add(0, new Object()); } } }

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zimme

Level 14

23 June 2020, 09:08

use this to get time before and after insert method. long start = System.currentTimeMillis(); insert10000(); long end = System.currentTimeMillis(); and then just return difference in time: end-start