Question

NSString * str = @＆＃34; Hello {{{separate this}}}以及此{{{也将此}}}}世界＆＃34;

我需要输出数组：

hello ：在数组中的索引0

将此：分隔在数组

中的索引1处

以及：在数组中的索引2

还将此：分隔在数组中的索引3

世界：在数组中的索引4

Answer 1

NSString *str = @"Hello group1 group1 group1 and also this group2 group2 group2 world";
NSString *pattern = @"^Hello (.+) and also this (.+) world$";
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:pattern
                                                                       options:NSRegularExpressionSearch
                                                                         error:nil];

NSArray *matches = [regex matchesInString:str
                                  options:0
                                    range:NSMakeRange(0, [str length])];
if ([matches count] == 2) {
    NSString *group1 = [str substringWithRange:[matches[0] range]];
    NSString *group2 = [str substringWithRange:[matches[1] range]];
} else {
    NSLog(@"Match failed");
}

Answer 2

下面的代码会为您提供相关指定的结果。

请注意!!! - 此代码仅适用于您在问题{{{和}}}中提及的静态符号组合。如果在该组合中进行的任何更改，您将无法获得所需的结果。

NSString *str = @"Hello {{{sepearte this}}} and also this {{{ also seperate this}}} world";

str = [str stringByReplacingOccurrencesOfString:@" {{{" withString:@"#"];
str = [str stringByReplacingOccurrencesOfString:@"}}} " withString:@"#"];
NSArray *components = [str componentsSeparatedByString:@"#"];

Answer 3

假设您的字符串格式正确，即没有任何不平衡的大括号，您可以拆分大括号：

NSArray<NSString *> *components = [[str stringByReplacingOccurrencesOfString:@"}}}" withString:@"{{{"] componentsSeparatedByString:@"{{{"];

然后最终修剪结果字符串：

NSMutableArray<NSString *> *trimmedComponents = [NSMutableArray array];
for (NSString *component in components) {
    [trimmedComponents addObject:[component stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]]];
}

从给定的字符串中分离字符串

3 个答案: