Pulling a range from an array

Question

So I don’t want anyone to solve it but just help me out in terms of working a certain part. So out of the array I have to print a certain numbers that fit within the range given(0 & 50). Besides manually putting array[i]>= 0 && array[i] <=50

How can I make it so it test over multiple values and draws the numbers from there. I seem to be stuck on that part.

See [similar question](https://stackoverflow.com/questions/3188672/how-to-elegantly-check-if-a-number-is-within-a-range) at C#. you can apply the solutions to JS too. — Guy Yogev, Mar 16 '19 at 08:00
Are you asking about JavaScript or Java? They are different languages. — JJJ, Mar 16 '19 at 11:03

iacobalin · Answer 1 · 2019-03-16T08:05:53.633

0

Edit (credits Guy Yogev):

function getRange(arr, min, max) {
  return arr.filter(function(entry) { return entry >= min && entry <= max; })
}

var testArr = [1, 2, 5, 10, 20, 30, 22, 4, 100];

console.log(getRange(testArr, 3, 10));

edited Mar 16 '19 at 08:05

answered Mar 16 '19 at 07:47

iacobalin

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Wouldn't [Array.filter](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter) be simpler to use? – Guy Yogev Mar 16 '19 at 07:56
yes, you're right. don't know what I was thinking about – iacobalin Mar 16 '19 at 08:02

score 0 · Answer 2 · answered Mar 16 '19 at 13:57

The clean solution in java would be using streams. You can do much more than just filter, but this would solve your question.

int[] filterByRange(int[] array, int min, int max) {
    return Arrays.stream(array)
            .filter(i -> min <= i && i<= max)
            .toArray(int[]::new);
}

score -4 · Answer 3 · answered Mar 16 '19 at 07:36

-4

array.slice(0,51)

This is

array[i]>= 0 && array[i] < 51

answered Mar 16 '19 at 07:36

Georgian Stan

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3
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Thanks but how do I make it to where it’s testing multiple times over different values and ranges. Like the user inputs the range and it’s not a set range? – Antonio Campos Mar 16 '19 at 07:41
array.slice takes out elements from an array, in your case the first 51, it doesn't check its value – baao Mar 16 '19 at 07:44
I don't think the question is about the index "0" and "50". It is more about to check if any element at x index, I mean A[x] is "more than numeric value 0 and less than value 50" or not – Kushagr Arora Mar 16 '19 at 07:54
@KushagrArora yes exactly! – Antonio Campos Mar 16 '19 at 08:54

Pulling a range from an array

3 Answers3