CODEWITHSUNDEEP
objective-cnsarray
techno
techno

Reputation: 55

How do I fetch NSArray elements with nth count?

If there is an NSArray with nth count, I need to fetch first 3 element and then next 3 element so on.

example:- [A,B,C,D,E,F,G]  
result1:- [A,B,C]  
result2:- [D,E,F]  
result3:- [G]

I have array of nth element for which I wanted to fetch each 3 element from beginning of the array till nth element.

Tried code,

 myArr=[[NSMutableArray alloc]initWithObjects:@"k",@"L",@"M",@"N",@"O",@"P",@"Z",nil‌​]; 
 NSArray *getData=[myArr subarrayWithRange:NSMakeRange(i, MIN(3, myArr.count))]; 
 i=i+3;

Upvotes: 0

Views: 88

Answers (1)

Avi
Avi

Reputation: 7552

Try the following.

NSArray *a = @[ @1, @2, @3, @4, @5, @6, @7 ];

int start = 0;
int slice_size = 3;
while (start < a.count) {
        NSRange range = NSMakeRange(start, slice_size);
        if (range.location + range.length >= a.count) {
                range.length = a.count - range.location;
        }

        NSArray *slice = [a subarrayWithRange:range];

        NSLog(@"slice: %@", slice);

        start += slice_size;
}

Upvotes: 1

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