//数组的方法调用与熟练
NSArray *array=@[@11,@22,@33,@"ldq"];
NSArray *array1 =[array arrayByAddingObject:@"dkf"];
array1=[NSArray arrayWithObjects:@11,@222, nil];
//NSLog(@"%@",array1);
NSArray *array3=[NSArray arrayWithArray:array];
//[array3 ];
//NSLog(@"%@",array3);
NSString *array11[]={@"123",@"344"};
NSArray *array4=[[NSArray alloc]initWithObjects:array11 count:2];
//NSLog(@"###%@",array4);
[array4 writeToFile:@"/Users/apple/Desktop/test.plist" atomically:YES];
NSArray *ary= [[NSArray alloc]initWithContentsOfFile:@"/Users/apple/Desktop/test.plist"];
NSLog(@"$$%@",ary);
NSInteger cout=[ary count];
NSLog(@"@@@%d",cout);
NSInteger a=[ary indexOfObject:@"344"];
NSLog(@"%d",a);
NSMutableArray *mArray = [NSMutableArray arrayWithCapacity:10];
[mArray addObjectsFromArray:ary];
[mArray replaceObjectAtIndex:1 withObject:@"www"];
NSLog(@"%@",mArray);
//排序数组,用自己写的方法comper:
Student *stu1=[[Student alloc]init];
stu1.age=56;
Student *stu2=[[Student alloc]init];
stu2.age=45;
Student *stu3=[[Student alloc]init];
stu3.age=78;
NSArray *a1=[NSArray arrayWithObjects:stu1,stu2,stu3, nil];
NSArray *a2=[a1 sortedArrayUsingSelector:@selector(comper:)];
for (Student *st in a2) {
NSLog(@"%d",st.age);
}
return YES;