从字符串中删除动态子字符串

Question

如果我有随机字符串，我需要删除这样的子字符串：

＆＃34; fsdfsd / p90x95 / fsdfsdf＆＃34; ＆GT;＆GT;＆GT; ＆＃34; fsdfsd / fsdfsdf＆＃34;

＆＃34; fsdfsd / s110x72 / fsdfsdsdff＆＃34; ＆GT;＆GT;＆GT; ＆＃34; fsdfsd / fsdfsdsdff＆＃34;

＆＃34; / sdfsdfd / fsdfsd / t800x1024 / fsdfsdsdff＆＃34; ＆GT;＆GT;＆GT; ＆＃34; / sdfsdfd / fsdfsd / fsdfsdsdff＆＃34;

我需要每次都删除子字符串，当只修复（规则）是： ＆＃39; /＆＃39;可选的字母数字＆＃39; x＆＃39;数字＆＃39; /＆＃39;

如何在所有情况下检测此子字符串并将其删除？

Answer 1

使用正则表达式/\w+x\d+

NSString *str = @"/sdfsdfd/fsdfsd/t800x1024/fsdfsdsdff";
NSError *error = nil;
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"/\\w+x\\d+" options:NSRegularExpressionCaseInsensitive error:&error];
NSString *modifiedString = [regex stringByReplacingMatchesInString:str options:0 range:NSMakeRange(0, [str length]) withTemplate:@""];
NSLog(@"%@", modifiedString); // output: /sdfsdfd/fsdfsd/fsdfsdsdff