How to sort NSMutableArray in objective C [closed]

Answer 1

Use sortedArrayUsingComparator

NSArray *arr = @[@3, @2, @6, @1];
NSArray *sorted = [arr sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {
    if ([obj1 intValue] < [obj2 intValue]) return NSOrderedAscending;
    else return NSOrderedDescending;
}];