数组倒序文件,用时可以直接用

#import <Foundation/Foundation.h>

@interface NSMutableArray (Convert)

- (NSMutableArray *)convertArr:(NSMutableArray *)arr;

@end

#import "NSMutableArray+Convert.h"

@implementation NSMutableArray (Convert)

NSMutableArray *arr1 = [[NSMutableArray alloc] initWithCapacity:1];

for (NSInteger i = [arr count] - 1; i >= 0; i--) {

[arr1 addObject:arr[i]];

}

return arr1;

}

@end