Iphone Numeric sorting

Iphone Numeric sorting For Array objects

NSArray *unsortedArray = [NSArray arrayWithObjects:@"Hello", @"4", @"Hi", @"5", @"2", @"10", @"1", nil];
NSArray *sortedArray = [unsortedArray sortedArrayUsingComparator:^(id firstObject, id secondObject) {
    return [((NSString *)firstObject) compare:((NSString *)secondObject) options:NSNumericSearch];
}];

http://stackoverflow.com/questions/4588542/sorting-nsarray-which-many-contain-number 

Iphone Numeric sorting string For Array objects

http://stackoverflow.com/questions/3230286/sort-an-array-with-numeric-strings