字符串重组

最新推荐文章于 2022-08-20 09:57:04 发布

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最新推荐文章于 2022-08-20 09:57:04 发布

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分类专栏： OC 文章标签：字符串 nsstring

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// 1.将字符串进行拼接
        int year = 1994;
        int month =04;
        int day =24;
        NSString *str = [NSString stringWithFormat:@"%d年%d月%d日",year,month,day];
        NSLog(@"%@",str);

        NSString *address = @"独墅湖";
        NSString *strAndAddress = [NSString stringWithFormat:@"%@and%@",str,address];
        NSLog(@"%@",strAndAddress);

// 2.在字符串的末尾添加字符
        NSString *str1 = @"www.itcast";
        NSString * apped = [str1 stringByAppendingString:@".com"];
        // 改变的是新字符 原有字符不变
        NSLog(@"%@,%@",apped,str1);

// 3.在字符串的指定范围内添加字符
        NSString *str2 = @"www.com";
        NSRange rang = {4,0};
        NSString *str3 = [str2 stringByReplacingCharactersInRange:rang withString:@"itcast."];
        NSLog(@"%@",str3);

// 4.用新字符替换原有字符
        NSString *str4 = @"www.itcast.com";
        NSString *str5 = [str4 stringByReplacingOccurrencesOfString:@"." withString:@"-"];
        NSLog(@"%@",str5);

// 5.删除特定的字符
        NSString *str6 = [str4 stringByReplacingOccurrencesOfString:@"www" withString:@""];
        NSLog(@"%@",str6);

// 6.删除字符串中的空格
        NSString *str7 = @"7www.   itca  st.  com";

        NSString *str8 = [str7 stringByReplacingOccurrencesOfString:@" " withString:@""];
        NSLog(@"%@",str8);