如何從字符串中刪除特定的單詞？

Question

我有一個NSString * str，有價值@「我喜歡編程和遊戲。」 我必須刪除「我」「像」&「和」從我的字符串，因此它應該看起來像「編程遊戲」

我該怎麼做，任何想法？

Answer 1

NSString *newString = @"I like Programming and gaming."; 
NSString *newString1 = [newString stringByReplacingOccurrencesOfString:@"I" withString:@""]; 
NSString *newString12 = [newString1 stringByReplacingOccurrencesOfString:@"like" withString:@""]; 
NSString *final = [newString12 stringByReplacingOccurrencesOfString:@"and" withString:@""]; 

分配給編輯的錯誤字符串變量，現在它是好的

NSLog(@"%@",final); 

輸出：編程遊戲

Answer 2

NSString * newString = [@"I like Programming and gaming." stringByReplacingOccurrencesOfString:@"I" withString:@""]; 
newString = [newString stringByReplacingOccurrencesOfString:@"like" withString:@""]; 
newString = [newString stringByReplacingOccurrencesOfString:@"and" withString:@""]; 

NSLog(@"%@", newString); 

Answer 3

讓你的字符串的可變副本（或初始化它的NSMutableString），然後使用replaceOccurrencesOfString:withString:options:range:來取代給定的字符串@「」（空字符串）。

Answer 4

更高效，比做一串串聯stringByReplacing...通話維護：

NSSet* badWords = [NSSet setWithObjects:@"I", @"like", @"and", nil]; 
NSString* str = @"I like Programming and gaming."; 
NSString* result = nil; 
NSArray* parts = [str componentsSeparatedByString:@" "]; 
for (NSString* part in parts) { 
    if (! [badWords containsObject: part]) { 
     if (! result) { 
      //initialize result 
      result = part; 
     } 
     else { 
      //append to the result 
      result = [NSString stringWithFormat:@"%@ %@", result, part]; 
     } 
    } 
} 

Answer 5

這是一個老問題，但我想展示我的解決方案：

NSArray* badWords = @[@"the", @"in", @"and", @"&",@"by"]; 
NSMutableString* mString = [NSMutableString stringWithString:str]; 

for (NSString* string in badWords) { 
    mString = [[mString stringByReplacingOccurrencesOfString:string withString:@""] mutableCopy]; 
} 

return [NSString stringWithString:mString];