Sum of Objects in an Array

[starwarsdevwookie59]

How do you get the total sum of the contents of an array? I have an array filled with integers and here is my code. Instead of objectAtIndex I need something like SumofObjects:1,2,3,4,5; is this possible? Any help would be great thanks!

NSString *title = [delegate.titlearray objectAtIndex:0];
cell.Label.text = title;

[Ins3rtNam3H3r3]

Originally Posted by starwarsdevwookie59

How do you get the total sum of the contents of an array? I have an array filled with integers and here is my code. Instead of objectAtIndex I need something like SumofObjects:1,2,3,4,5; is this possible? Any help would be great thanks!

NSString *title = [delegate.titlearray objectAtIndex:0];
cell.Label.text = title;

I am not at my mac right now to test this but it should work.

int sum=0;
for(int x=0; x < [array count]; x++)
{
    sum += [array objectAtIndex:x];
}

[starwarsdevwookie59]

Originally Posted by Ins3rtNam3H3r3

I am not at my mac right now to test this but it should work.

int sum=0;
for(int x=0; x < [array count]; x++)
{
    sum += [array objectAtIndex:x];
}

Thanks! The code dosent give any errors but it gives two warnings. One in your code and the other when i try to set the cells text as "sum". They are "makes integer from a pointer without a cast" You know what that means?

[smithdale87]

Assuming your "array" has NSNumber objects..

int sum=0;
for(int x=0; x < [array count]; x++)
{
    sum += [[array objectAtIndex:x] intValue];
}

//to set the text
label.text = [NSString stringWithFormat:@"%d", sum];

[starwarsdevwookie59]

Originally Posted by smithdale87

Assuming your "array" has NSNumber objects..

int sum=0;
for(int x=0; x < [array count]; x++)
{
    sum += [[array objectAtIndex:x] intValue];
}

//to set the text
label.text = [NSString stringWithFormat:@"%d", sum];

Um I'm pretty sure my array dosent have NSNumber objects. It's just a normal NSMutable array initwithObjects:@"1",@"2","3",nil.
How do I make it into that? Thanks!

[smithdale87]

ok, so it has strings..

the same code should still work

[Pelaez]

If you don't need an array of a variable size, you could just use an standard array.

int array[3];

ints use a lot less memory than NSStrings + NSMutableArrays, and I don't think that you need all the features that they bring.

[starwarsdevwookie59]

Originally Posted by Pelaez

If you don't need an array of a variable size, you could just use an standard array.

int array[3];

ints use a lot less memory than NSStrings + NSMutableArrays, and I don't think that you need all the features that they bring.

The arrays need to be editable. add/delete/modify etc... can that handle things things? would the app crash if i loaded say 150 NSMutables at launch?