数组的比较(使用block比较的方式)

NSArray *array = @[@"19",@"7",@"3",@"4",@"5",@"8"];
        NSArray *sortedArray = [array sortedArrayUsingComparator: ^(id obj1, id obj2) {
            
            if ([obj1 integerValue] > [obj2 integerValue]) {
                return -1L;
            }
            
            if ([obj1 integerValue] < [obj2 integerValue]) {
                return 1L;
            }
            return 0L;
        }];
        NSLog(@"%@",sortedArray);

　　　//使用Seltor来选择比较数组

NSArray *array22 = @[@1,@2,@13,@12,@23];
        NSArray *resultArray1 = [array22 sortedArrayUsingSelector:@selector(compare:)];
        NSLog(@"%@",resultArray1);