如何使用NSNumbers对NSMutable数组进行排序？

#import <Foundation/Foundation.h>

int main() {
    @autoreleasepool {
        NSMutableArray *mutableArray = [NSMutableArray arrayWithObjects:@5, @2, @8, @1, nil];
        
        NSMutableArray *numberArray = [NSMutableArray array];
        for (NSNumber *number in mutableArray) {
            [numberArray addObject:number];
        }
        
        NSArray *sortedArray = [numberArray sortedArrayUsingSelector:@selector(compare:)];
        
        NSMutableArray *sortedMutableArray = [NSMutableArray array];
        for (NSNumber *number in sortedArray) {
            [sortedMutableArray addObject:number];
        }
        
        // 输出排序后的数组
        for (NSNumber *number in sortedMutableArray) {
            NSLog(@"%@", number);
        }
    }
    return 0;
}