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I have an array like this

Array['one','two','three','four','five']

and I have an array like this

Array['2','4','0']

indicating the indexes of the elements in the first array I wish to remove or .splice() so the resulting array would look like this

Array['two','four']  // <--- note no undefined positions

If you try and loop through the indexes and just do a splice for each one, after the first splice your indexes change according to the element that was removed.

How can I accomplish this?

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1 Answer

up vote 3 down vote accepted

You can start splicing the indexes from the array in reverse order. i.e. Loop from the length of array to 0.

First splice index 4 and then index 2.

EDIT: As you mentioned the indexes array need not be in same order, you can sort the indexes array in ascending order and then implement the above logic.

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+1 for being clever, but there is no guarantee the "indexes" array will be in a given ordering. I'll update the question to make that clear. – jondavidjohn Mar 3 '11 at 19:12
@jondavidjohn - No issues. Just sort the indexes array to make it in ascending order. Updated my answer too. Hope this helps :) – Sachin Shanbhag Mar 3 '11 at 19:14
Very good, thanks! – jondavidjohn Mar 3 '11 at 19:15

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