摘要：
按NSDictionary的key来对其进行排序：先将dict的allkeys赋给一个数组，然后通过sortedArrayUsingComparator:方法对数组排序，然后遍历数组取字典对应key的值就okinti =0;NSArray*keys = [dictallKeys];NSArray*s... 阅读全文
摘要：
[cpp]view plaincopyprint?NSArray*arr=[[NSArrayalloc]initWithObjects:@"aa",@"bb",@"cc",@"dd",@"ee",@"ff",nil];//1.对数组进行升序排序//sortedArrayUsingSelector:排... 阅读全文
摘要：
[cpp]view plaincopyprint?NSMutableArray*arr=[[NSMutableArrayalloc]init];for(inti=0;i 阅读全文
摘要：
-(NSArray*)invertedOrder{//1.先拷贝副本NSMutableArray*arr=[NSMutableArrayarrayWithArray:self];for(inti=0;iNSArray*arr=@[@"aa",@"bb",@"cc",@"dd",@"ee"];//0-... 阅读全文
摘要：
#import"Teacher.h"@interfaceOurClass:NSObject@property(nonatomic,retain)Teacher*tea;@property(nonatomic,retain)NSMutableArray*arr;@end#import"OurClass... 阅读全文
摘要：
#importintmain(intargc,constchar*argv[]){@autoreleasepool{//创建字典NSDictionary*dic1=[NSDictionarydictionaryWithObject:@"value"forKey:@"key"];NSLog(@"dic... 阅读全文