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ioscocoa-touchnsarray

Split an NSArray into a fixed size and the rest

I have an NSArray in my project which has nearly 12 elements. I want to split this array into 2 arrays. I want the first 3 elements in the first array and the rest of the elements in the second NSArray.

Solution

  • Based on the answer of Alex Reynolds:

    You should make a range that has the length of 3 and make the first half of the array with it, then modify its location and length and create the second half of the array.

    NSArray *firstThreeArray;
NSArray *otherArray;
NSRange threeRange;

threeRange.location = 0;
threeRange.length = 3;

firstThreeArray = [wholeArray subarrayWithRange:threeRange];

threeRange.location = threeRange.length;
threeRange.length = [wholeArray count] - threeRange.length;

otherArray = [wholeArray subarrayWithRange:threeRange];