Sorting NSMutableArray Removing First Element

Question

How to sort an NSMutableArray numerically when it contains objects like follows:

NSMutableArray *array = [[NSMutableArray alloc] initWithObjects:@"P3",@"P1",@"P4",@"P10", nil];

The output of the same should be like: P1, P3, P4, P10

Answer 1

You need to use NSNumericSearch

[array sortUsingComparator:^NSComparisonResult(NSString*  _Nonnull str1, NSString*  _Nonnull str2) {
    return [str1 compare:str2 options:NSNumericSearch];
}];

From the Header Documentation-

NSNumericSearch = 64, /* Added in 10.2; Numbers within strings are compared using numeric value, that is, Foo2.txt < Foo7.txt < Foo25.txt; only applies to compare methods, not find */

Hope this is what you are looking for.