#import <Foundation/Foundation.h>
int main(int argc, const char * argv[]) {
@autoreleasepool {
NSNumber *num=[NSNumber numberWithInt:123456789];
NSString *string=[NSString stringWithFormat:@"%@",num];
NSLog(@"%@",string);
NSMutableArray *arr=[NSMutableArray array];
for (NSInteger i=string.length-1; i>=0; i--) {
NSString *str3= [string substringWithRange:NSMakeRange(i, 1)];
[arr addObject:str3];
}
for(id ser in arr){
NSLog(@"%@",ser);
}
}
return 0;
}
一个整数123456789分开输出并且9 8 7 6 5 4 3 2 1
原文：http://www.cnblogs.com/j-h-t-123-n/p/5116482.html