Sort an NSMutablearray using custom objects in Objective C

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Solution:

 Sort an NSMutablearray having two types.One is NSComparison Method and another one is NSSortdescriptor method.

NSComparison Method:
- (NSComparisonResult)compareArray:(NewMember *)otherObject {
    return [self.birthDate compare:otherObject.birthDate];
}

NSArray *sortedArray = [drinkDetails sortedArrayUsingSelector:@selector(compareArray:)];
The array will be passed to another method with custom objects and return the greater object.

NSSortdescriptor method:

NSSortDescriptor *sortDesc;
sortDesc = [[NSSortDescriptor alloc] initWithKey:@"birthDate"
                                           ascending:YES];
NSArray *sortedArray = [drinkDetails sortedArrayUsingDescriptors:@[sortDesc]];


The sortdescriptor method will be efficient method compare to previous one.

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