Splitting an NSArray to several components

LICENSE

Copyright (c) 2013 Jamz Tang <[email protected]>
 
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of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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THE SOFTWARE.

NSArray-JTArraySplit.h

/*
 * This file is part of the http://ioscodesnippet.com
 * originated from http://ioscodesnippet.com/post/14016693885/splitting-an-array-to-several-components
 * created at 2011-12-10
 * (c) Jamz Tang <[email protected]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
 
#import <Foundation/Foundation.h>

@interface NSArray (JTArraySplit)

+ (NSArray *)splitArray:(NSArray *)targetArray componentsPerSegment:(NSUInteger)componentsCount;

@end

NSArray-JTArraySplit.m

/*
 * This file is part of the http://ioscodesnippet.com
 * originated from http://ioscodesnippet.com/post/14016693885/splitting-an-array-to-several-components
 * created at 2011-12-10
 * (c) Jamz Tang <[email protected]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
 
#import "NSArray+JTArraySplit.h"

@implementation NSArray (JTArraySplit)

+ (NSArray *)splitArray:(NSArray *)targetArray componentsPerSegment:(NSUInteger)componentsCount {
    NSMutableArray *splitedArray = [NSMutableArray array];

    NSUInteger targetArrayCount = [targetArray count];

    if (targetArrayCount > 0) {
        int index = 0;
        while (index < targetArrayCount) {
            int length = MIN(targetArrayCount - index, componentsCount);
            NSArray *subArray = [targetArray subarrayWithRange:NSMakeRange(index, length)];
            [splitedArray addObject:subArray];
            index = index+length;
        }
        return splitedArray;
    } else {
        // no objects inside targetArray, so just return empty array
        return splitedArray;
    }
}

@end