小白学开发（iOS）OC_ 字符串重组（2015-08-13）

//

//  main.m

//  字符串重组

//

//  Created by admin on 15/8/13.

//  Copyright (c) 2015年 admin. All rights reserved.

//

#import <Foundation/Foundation.h>

int main(int argc,
const char * argv[]) {

@autoreleasepool {

//      1. 多个数据拼接成一个字符串

int year = 2015;

int month = 8;

int day = 10;

NSString *date = [NSString
stringWithFormat:@"%d年%d月%d日",year,month,day];

NSLog(@"日期为 :%@",date);

NSString *address =
@"地球的某一个地方";

NSString *dateAndAddress = [NSString
stringWithFormat:@"时间:%@
地点:%@",date,address];

NSLog(@"%@",dateAndAddress);

//      2. 在字符串的末尾追加新的字符

NSString *str1 = @"www.";

NSString *str2 = [str1
stringByAppendingString:@"baidu"];

NSString *str3 = [str2
stringByAppendingString:@".com"];

NSLog(@"str1: %@ str2:%@ str3:%@", str1, str2, str3);

//      3. 在自定义的范围内追加字符串

NSString *str4 = @"www..com";

NSRange range = {4,5};

NSString *str5 = [str3
stringByReplacingCharactersInRange:range
withString:@"baidu"];

NSLog(@" str4: %@ str5: %@", str4, str5);

//      4. 使用新的字符串，替换原有的字符

NSString *str6 = @"www.baidu.com";

//      (自定义替换的位置)

NSString *str7 = [str6
stringByReplacingCharactersInRange:range
withString:@"google"];

NSLog(@"str6: %@ str7: %@", str6, str7);

//      (将字符串中的 w
全部替换成 t)

NSString *str8 = [str6
stringByReplacingOccurrencesOfString:@"w"
withString:@"t"];

NSLog(@"str8: %@", str8);

//      5. 在字符串中删除某些特定的字符
既：将上面的t换成空

NSString *str9 = [str6
stringByReplacingOccurrencesOfString:@"."
withString:@""];

NSLog(@"str9: %@", str9);

//      6. 去掉字符串中的空格

NSString *str10 =
@"www.    bai   du.co  m";

NSString *str11 = [str10
stringByReplacingOccurrencesOfString:@" "
withString:@""];

NSLog(@"str10: %@ str11: %@", str10, str11);

}

return 0;

}

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