Question

How to find the first occurrence elements in LinkedList in Java

Answer 1

package javaapplication1;

import java.util.LinkedList;

public class JavaApplication1 {

    public static void main(String[] args) {

        LinkedList lnkList = new LinkedList();

        // add elements to LinkedList
        lnkList.add("Java"); // 0 is the first index
        lnkList.add("C"); // 1
        lnkList.add("C++"); // 2
        lnkList.add("C#"); // 3 
        lnkList.add("PHP"); // 4
        lnkList.add("JavaScript"); // 5
        lnkList.add("OpenGL"); // 6

        int i = lnkList.indexOf("C#");
        if (i != -1)
            System.out.println("Found in index: " + i);
        else
            System.out.println("Not Found");
    }
}
 
/*
run:
 
Found in index: 3
 
*/

 

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Answer 2

package javaapplication1;

import java.util.LinkedList;

public class JavaApplication1 {

    public static void main(String[] args) {

        LinkedList lnkList = new LinkedList();

        // add elements to LinkedList
        lnkList.add("Java"); // 0 is the first index
        lnkList.add("C"); // 1
        lnkList.add("C++"); // 2
        lnkList.add("C#"); // 3 
        lnkList.add("PHP"); // 4
        lnkList.add("JavaScript"); // 5
        lnkList.add("OpenGL"); // 6

        int i = lnkList.indexOf("Java");
        if (i != -1)
            System.out.println("Found in index: " + i);
        else
            System.out.println("Not Found");
    }
}
 
/*
run:
 
Found in index: 0
 
*/

 

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