copy elements from one array to another array

Question

I like to copy the array A elements to Array B elements with specific

example :

array A=[0123]        
array  b=[1111111111111111111]

i want `b=[1111111101231111111]

int ip=0;                        
[b addObjectsFromArray:[A objectsAtIndexes:[NSIndexSetindexSetWithIndexesInRange:NSMakeRange(ip, 10)]]];

i know how to copy the array element , i want to know how to replace the object start from 9 to 13 in array b to replaced by array a element , can any give me hint

Why do you use the iPhone tag?

Max
– Max

2013-03-07 14:58:32 +00:00
Commented Mar 7, 2013 at 14:58 — Max
– Max, Commented Mar 7, 2013 at 14:58

Alladinian · Accepted Answer · 2013-03-07 15:06:02Z

3

    NSArray *a = @[@0,@1,@2,@3];
    NSArray *b = @[@1,@1,@1,@1,@1,@1,@1,@1,@1,@1,@1,@1,@1,@1,@1,@1,@1,@1,@1];

    NSMutableArray *c = [b mutableCopy];
    // The range here is index->8 (9th object) and length->4
    [c replaceObjectsInRange:NSMakeRange(8,4) withObjectsFromArray:a];

answered Mar 7, 2013 at 15:06

Alladinian

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Comments

Vincent Saluzzo · Accepted Answer · 2013-03-07 15:01:11Z

0

You need to create mutable copy of your array and modify them:

NSMutableArray* mutableArray = [yourArray mutableCopy];

Then you will access to this methods: https://developer.apple.com/library/mac/#documentation/Cocoa/Reference/Foundation/Classes/NSMutableArray_Class/Reference/Reference.html

answered Mar 7, 2013 at 15:01

Vincent Saluzzo

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1 Comment

Dian007 Over a year ago

hi i am using nsmutable array only. i can copy the array A but i want to replace that into array b between 9 to 13

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