Getting NSDictionary keys sorted by their respective values

Question

I have an NSMutableDictionary with integer values, and I\'d like to get an array of the keys, sorted ascending by their respective values. For example, with thi

Answer 1

Here's a solution:

NSDictionary *dictionary; // initialize dictionary
NSArray *sorted = [[dictionary allKeys] sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {
    return [[dictionary objectForKey:obj1] compare:[dictionary objectForKey:obj2]];
}];