字典、集合的用法
// NSDictionary
NSDictionary *dictionary = [[ NSDictionaryalloc]initWithObjectsAndKeys:@"value1", @"key1", @"value2", @"key2", @"v3", @"k3", @"vc9", @"ko0",@"M",@"Ang",@"9",@"aa", @"aa", @"2", @"sg", @"-2", nil];
NSLog(@"%@", dictionary);
//使用类方法创建
NSDictionary *d = [NSDictionarydictionaryWithObjectsAndKeys:@"abc", @"kkk1", @"ABC", @"k333", nil];
NSLog(@"%@", d);
//只能赋一个值的方法
NSDictionary *d1 = [NSDictionarydictionaryWithObject:@"vv3"forKey:@"kkkkkkk5"];
NSLog(@"%@", d1);
//创建保存索引key的数组
NSArray *keyArray = [NSArray arrayWithObjects:@"K1",@"K3",@"K5", nil];
//创建保存所有value的数组
NSArray *valueArray = [NSArray arrayWithObjects:@"v1", @"v3",@"v5", nil];
NSDictionary *d2 = [NSDictionarydictionaryWithObjects:valueArray forKeys:keyArray];
NSLog(@"%@", d2);
//使用一个文件创建字典对象
NSDictionary *d5 = [NSDictionarydictionaryWithContentsOfFile:@"/Users/lanou3g/Desktop/Deme_4.25/Deme_4.25/Dict.List.plist"];
NSLog(@"%ld",[d5 count]);
//根据Key取出一个值
NSString *p1 = [d5 objectForKey:@"abcd"];
NSLog(@"%@", p1);
//取出字典中所有的key
NSArray *allkeys = [d5 allKeys];
NSLog(@"%@", allkeys);
//取出所有value
NSArray *allvalue = [d5 allValues];
NSLog(@"%@", allvalue);
//使用枚举器
NSEnumerator *enumerator =[d5 keyEnumerator];
NSString *str = nil;
while (str = [enumerator nextObject]) {
NSLog(@"%@", str);
}
//数组中使用枚举器
NSArray *arr = [NSArrayarrayWithObjects:@"hjds",@"jhnj",@"ihi", nil];
NSEnumerator *e = [arr objectEnumerator];
NSString *str5 = nil;
while (str5 = [e nextObject]) {
NSLog(@"%@",str5);
}
NSMutableDictionary *dic1 = [NSMutableDictionarydictionaryWithObject:@"value1"forKey:@"k1"];
NSMutableDictionary *dic2 =[NSMutableDictionarydictionaryWithObject:@"value2"forKey:@"k2"];
[dic1 addEntriesFromDictionary:dic2];
NSLog(@"%@",dic1);
[dic1 removeAllObjects];
NSLog(@"%@",dic1);
[dic1 setValue:@"lalala" forKey:@"123"];
NSLog(@"%@",dic1);
//NSSet
//1.使用类方法创建
NSSet *set1 = [NSSet set]; //创建一个空的集合对象
NSSet *set2 = [NSSetsetWithObject:@"abc"];
NSSet *set3 = [NSSet setWithObjects:@"hahaha",@"hehehe",@"eee", nil];
NSLog(@"%@", set2);
NSLog(@"%@", set3);
NSArray *arr = [NSArrayarrayWithObjects:@"abc",@"bcd",@"cdf", nil];
NSSet *set4 = [NSSet setWithArray:arr];
NSLog(@"----------%@", set4);
NSSet *set5 = [NSSetsetWithObject:@"wow"];
NSLog(@"%@", set5);
NSSet *set6 = [NSSet setWithSet:set3];
NSSet *set7 = [NSSet setWithObjects:set6,set2, nil];
NSLog(@"+++++%@", set7);
//使用实例方法创建集合
NSSet *s1 = [[NSSetalloc]initWithObjects:@"abc",@"bcd", nil];
NSSet *s2 = [[NSSetalloc]initWithSet:s1];
NSLog(@"%@", s2);
NSSet *s3 = [[NSSetalloc]initWithArray:[NSArrayarrayWithObjects:@"abc",@"bcd",@"cdf", nil]];
NSLog(@"%@", s3);
NSSet *s4 = [[NSSetalloc]initWithSet:s1 copyItems:NO];
NSLog(@"%@", s4);
NSLog(@"%ld",[s3 count]);
//使用枚举器
NSEnumerator *e = [s3 objectEnumerator];
NSString *str =Nil;
while (str = [e nextObject]) {
NSLog(@"使用枚举器：%@",str);
}
NSEnumerator *e1 = [s3 objectEnumerator];
NSString *str5 = nil;
while (str5 = [e1 nextObject]) {
NSLog(@"%@", str5);
}
//判断是否有交集
NSLog(@"%d",[set4 intersectsSet:s1]);
//判断是否相等
NSLog(@"%d",[set4 isEqualToSet:s3]);
//判断是否是子集
NSLog(@"%d",[set4 isSubsetOfSet:set5]);
NSMutableSet *s6 = [NSMutableSetsetWithObjects:@"hhh",@"jjj",@"kkk",@"nnn",nil];
NSMutableSet *s7 = [NSMutableSetsetWithObjects:@"hhh",@"jjj", nil];
[s6 intersectSet:s7]; //intersectsSet 多个intersect“s“是判断是否有交集
NSLog(@"%@",s6);
[s6 addObject:@"aaa"];
NSLog(@"%@",s6);
[s6 minusSet:s7];
NSLog(@"%@",s6);
//取2个集合的并集
[s6 unionSet:s7];
NSLog(@"%@",s6);
//给集合赋值
[s7 setSet: s3];
NSLog(@"%@",s7);
}
return 0;
}
NSInteger intSort(id num1, id num2, void *context)
{
int v1 = [num1 intValue];
int v2 = [num2 intValue];
if (v1 < v2)
return NSOrderedAscending;
else if (v1 > v2)
returnNSOrderedDescending;
else
return NSOrderedSame;
}