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.

#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. 在自己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";

// (自己定义替换的位置)

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

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

// (将字符串中的 w 所有替换成 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;

}