Question

How to find the index of elements in a list based on the substring in the elements in Java

Answer 1

import java.util.ArrayList;
import java.util.List;

public class FindIndexPositionsInAListBasedOnSubstringOfElement_Java {
    public static void main(String[] args) {
        List<String> aList = new ArrayList<>();
        aList.add("bbc");
        aList.add("nnd");
        aList.add("wbb");
        aList.add("ccb");
        aList.add("qqd");
        aList.add("bbbbbo");

        List<Integer> indexList = new ArrayList<>();
        for (int i = 0; i < aList.size(); i++) {
            String s = aList.get(i);
            if (s.contains("bb")) {
                indexList.add(i);
            }
        }

        System.out.println(indexList);
    }
}


/*
run:

[0, 2, 5]

*/

 

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