For loop 1a ,2b, 3c... in java

Question

I am learning how for loops work. I need to print the values

1a 2b 3c

This is what I have tried so far:

int [] numbers ={1, 2, 3};
String [] letters = {"a","b","c"};
for (int n: numbers){
    for( String l:letters){
        Log.i("sas","Result    " + n +l);
    }
}

This code is obviously not working. It gave me

1a 1b 1c 2a 2b 2c 3a 3b 3c

How can I fix the loop to give a result of 1a 2b 3c?

score 4 · Accepted Answer · edited Oct 12 '15 at 16:37

4

You do not need two nested loops, you need one loop iterating both arrays at the same time:

for (int i = 0 ; i < Math.min(numbers.length, letters.length) ; i++) {
    Log.i("sas","Result    " + numbers[i] + letters[i]);
}

If you are certain that both arrays have the same number of elements, you could use length of one of them (i.e. numbers.length or letters.length, it does not matter since they are equal) for the stopping condition of your for loop.

edited Oct 12 '15 at 16:37

Uma Kanth

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answered Oct 12 '15 at 15:33

Sergey Kalinichenko

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Thank you man, that what i need, i have to wait 10 min to accept your answer. – Mounir Elfassi Oct 12 '15 at 15:36

score 1 · Answer 2 · answered Oct 12 '15 at 15:34

1

for (int i = 0; i< numbers.length(); i++){
        Log.i("sas","Result    " + numbers[i] +letters[i]);
 }

Assuming that sizes of two arrays will be same and you want to attach corresponding items together

answered Oct 12 '15 at 15:34

stinepike

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For loop 1a ,2b, 3c... in java

2 Answers2