Sort an NSMutablearray with custom objects in iOS

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Solution:

 You can use sortdescriptor to sort an array of objects.

NSSortDescriptor *sortDesc;
sortDesc = [[NSSortDescriptor alloc] initWithKey:@"createdDate"
                                           ascending:YES];
NSArray *sortArr = [arrayDetails sortedArrayUsingDescriptors:@[sortDesc]];


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