[Code notes] vertical lines of text and code notes

Source: Internet
Author: User

[Code notes] vertical lines of text and code notes

I. Code.

-(Void) viewDidLoad {[super viewDidLoad]; // Do any additional setup after loading the view. NSString * str = @ "hello"; NSMutableArray * arr = [[NSMutableArray alloc] init]; for (int I = 0; I <str. length; I ++) {NSString * str1 = [str substringWithRange: NSMakeRange (I, 1)]; NSString * str2 = [str1 stringByAppendingString: @ "\ n"]; [arr addObject: str2];} NSString * str3; for (int I = 0; I <arr. count-1; I ++) {if (I = 0) {str3 = [arr [I] stringByAppendingString: arr [I + 1];} else {str3 = [str3 stringByAppendingString: arr [I + 1] ;}} NSLog (@ "% @", str3 );}


2. output.

14:25:43. 161 vertical bar text [8130: 197228] Hello



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