iphone - 在 NSArray 中的字符串中搜索关键字

Question

我有一个关键字数组和一个字符串数组。

我目前正在迭代关键字，并在字符串数组上使用过滤器来确定关键字是否在其中(以某种形式)。

下面的代码可以工作，但是当另一个单词中存在关键字(或与关键字相同的字符)时，就会对此进行标记。 IE。在字符串 ribbon 中搜索 bon 将标记功能区。我不想进行精确的比较，因为关键字可能会被字符串中的其他字符/单词包围。

有没有办法可以搜索它并且仅在它被空格或括号包围时标记它？ IE。不是另一个单词的一部分..

NSArray *paInc = [productIncludes valueForKey:pa];
// This is the array of keywords

NSMutableArray *paMatchedIncludes = [[NSMutableArray alloc] init];

for (id include in paInc){

    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF contains [cd] %@", include];
    NSArray *filteredArray = [stringArray filteredArrayUsingPredicate:predicate];
    // stringArray is the array containing the strings I want to search for these keywords

    for (NSString *ing in filteredArray){
        if ([ing length] > 0){
            if (![paMatchedIncludes containsObject:[NSString stringWithFormat:@"%@",ing]]){
                [paMatchedIncludes addObject:[NSString stringWithFormat:@"%@",ing]];
            }
        }
    }

}

Answer 1

下面的代码可以解决您的问题吗？

NSArray *paInc = @[@"bon",
                   @"ssib"];
// This is the array of keywords

NSArray *stringArray = @[@"Searching for bon in string ribbon would flag ribbon.",
                         @"I don't want to do an exact comparison as it's possible the keyword will be surrounded by other characters / words in the string."];
// stringArray is the array containing the strings I want to search for these keywords

NSMutableArray *paMatchedIncludes = [[NSMutableArray alloc] init];

for (id include in paInc){ // for every keyword
    for (NSString *nextString in stringArray) { // for every string
        NSArray *components = [nextString componentsSeparatedByCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@" ()"]];
        if ([components containsObject:include]) {
            [paMatchedIncludes addObject:nextString];
        }
    }
}

编辑(由于您的评论):对于不区分大小写的比较:

for (id include in paInc){ // for every keyword
    for (NSString *nextString in stringArray) { // for every string
        NSArray *components = [nextString componentsSeparatedByCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@" ()"]];
        for (NSString *nextComponent in components) {
            if([nextComponent caseInsensitiveCompare:include] == NSOrderedSame)
                [paMatchedIncludes addObject:nextString];
        }
    }
}