How to check last index of string being looped over

Question

I know how loops work but I wasn't sure how I could check the last index of the string I am iterating over in this case. Here is an example:

String words = "Apple gum fruit red orange triangle";
for(String foo : words.split("\\s+"){
    //How would I get the index of foo at any given point in the loop
 }

What do you mean, the index of the word in the array of words, or the index of the substring inside the original string? — khelwood, Aug 01 '17 at 12:26
[Take a look at this](https://stackoverflow.com/questions/477550/is-there-a-way-to-access-an-iteration-counter-in-javas-for-each-loop) — bracco23, Aug 01 '17 at 12:27

Aubin · Accepted Answer · 2017-08-04T11:58:52.227

2

String   sentence = "Apple gum fruit red orange triangle";
String[] words    = sentence.split("\\s+");
for( int i = 0; i < words.length; ++i ) {
   String foo = words[i];
   // i is the index
}

edited Aug 04 '17 at 11:58

answered Aug 01 '17 at 12:26

Aubin

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Murat Karagöz · Answer 2 · 2017-08-01T12:29:22.773

0

You can use a counter..?

String words = "Apple gum fruit red orange triangle";
int counter = 0;
for(String foo : words.split("\\s+"){
    System.out.println(counter);
    counter++;
    //How would I get the index of foo at any given point in the loop
 }

If you mean the index of the starting character you are looking into something like this

String words = "Apple gum fruit red orange triangle";
int index = 0;
for(String foo : words.split("\\s+"){
    System.out.println(index);
    index += foo.length() +1; // to dismiss the whitespace
    //How would I get the index of foo at any given point in the loop
 }

edited Aug 01 '17 at 12:29

answered Aug 01 '17 at 12:26

Murat Karagöz

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I would want to access what foo was in any point in iteration over words – ProgrammingCuber Aug 01 '17 at 12:29
@ProgrammingCuber You have the `foo` field inside the loop. – Murat Karagöz Aug 01 '17 at 12:30
would that get me the contents in words though or just provide me the index of where it is in the loop? – ProgrammingCuber Aug 01 '17 at 12:31
@ProgrammingCuber It's the word. – Murat Karagöz Aug 01 '17 at 12:32
that doesn't give me the words Apple gum fruit red orange triangle. it gives their index. – ProgrammingCuber Aug 01 '17 at 12:35
@ProgrammingCuber I don't know what you are doing but `System.out.println(foo)` gives you the String. – Murat Karagöz Aug 01 '17 at 12:38

How to check last index of string being looped over

2 Answers2