Printing Index number of array

Question

I am trying to print an output that would find the max number and also print the index number of the array as well. I am able to print the max number but I am unable to print the index number.

public static int findMax(int[] allNumbers) {
    int maxValue = allNumbers[0];
    for (int i = 1; i < allNumbers.length; i++) {
        if (allNumbers[i] > maxValue) {
            maxValue = allNumbers[i];
        }
    }
    return (int) maxValue;
}

my array:

int[] allNumbers = new int[inpNum];

I can call the max number with the following findMax(number)

You don't need to cast maxValue to an int in your return statement. Don't be afraid, it's always an int ;-) — Taslim Oseni
– Taslim Oseni, Commented Jul 30, 2018 at 16:22

Ousmane D. · Accepted Answer · 2018-07-30 16:16:22Z

2

You can return an array of the max value and index:

public static int[] findMax(int[] allNumbers) {
        int maxValue = allNumbers[0];
        int index = 0;
        for (int i = 1; i < allNumbers.length; i++) {
            if (allNumbers[i] > maxValue) {
                maxValue = allNumbers[i];
                index = i;
            }
        }
        return new int[] {maxValue , index};
}

answered Jul 30, 2018 at 16:16

Ousmane D.

56.6k8 gold badges101 silver badges134 bronze badges

Sign up to request clarification or add additional context in comments.

5 Comments

Javakiddie Over a year ago

when I try this code i am receiving I@55f96302 when my output is printed

Ousmane D. Over a year ago

@SPJava use the Arrays.toString method. System.out.println(Arrays.toString(findMax(yourArray)));

Javakiddie Over a year ago

Thank you! that worked now my only question is if I want to add wording so instead of the output showing: 100, 1 I would want it to be 100 on position 1. Anyway of doing this?

Ousmane D. Over a year ago

@SPJava store a reference to the returned array and then index into the array to get the corresponding elements, providing your wording... --> int[] result = findMax(yourArray); System.out.println(result[0] + " on position " + result[1]);

Javakiddie Over a year ago

question what happens if two numbers are the same how can I print the index number twice? example input numbers 100, 100, 10 should print 100 on position 1 and 2

Collectives™ on Stack Overflow

Printing Index number of array

1 Answer 1

5 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

5 Comments

Your Answer

Sign up or log in

Post as a guest

Related