How can I delete multiple items from collection?

Hello,

How do I delete multiple elements from collection (array) at once?

I'd like to do that by index.

For example, I want to delete elements with indexes 1, 2, 3 and 4.

If I delete element at index 1, all elements and their indexes will be shifted. That's the problem. I need to delete the elements in compact index section, like: 1,2,3,4 or 7,8,9,10.


Thank you in advance

Goran

If this is an ArrayList you have a RemoveRange method which takes the start index and the number of elements to remove.

Darwen.

A quick and dirty hack is to delete from the highest to the lowest index. So you will not getting in trouble with shifted indexes. Therefore you have to sort your indexes for removing in the right way.
For solving this problem in a good way you should use an ArrayList and the Remove()-method. So you do not get in trouble with any index.

Quote:

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Originally Posted by torrud

A quick and dirty hack is to delete from the highest to the lowest index. So you will not getting in trouble with shifted indexes. Therefore you have to sort your indexes for removing in the right way.
For solving this problem in a good way you should use an ArrayList and the Remove()-method. So you do not get in trouble with any index.

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Try as torrud,darwen tol you you can do by that way .i mean to say just enter the index store all the index no in a array make a loop and use remove at and specify index no in it.

Second if you want to do it in simple array only

do same thing except after removing 1 element make a left shift to array element and then again perform the calculation.

it's apposite of insertion sort method forget sort for a while time
but you can get a idea by this that how it take place same way you can delete also

if still problem let me know