NSString에서 동시에 여러 문자 바꾸기

Question

stringByReplacingOccurrencesOfString을 사용하지 않고 문자열에서 여러 문자를 한 번에 바꾸려고합니다. 그래서 만약 내 문자열이 : @"/BKL_UO+C-" 나는 무엇을/to _ to 변경; - ~ +; + to -; _ ~ /. 내 코드에서 나는 먼저 stringByReplacingOccurrencesOfString을 대체하고 새로운 문자열로 저장하고 그것들과 함께 문자의 NSArray를 생성하고자하는 각 표지판을 적용하여이 작업을 시도했습니다. 차이점을 비교하고 다른 어레이에 저장합니다. 여기서 모든 차이점을 모든 4 개의 어레이에서 푸십시오. 그런 다음 모든 차이점을 초기 문자열에 적용하십시오.

초기 해시 문자열 : @"lRocUK/Qy+V2P3yDhCd74RvHjCDzlTfrGMolZZE0pcQ" 예상 결과 : @"lRocUK_Qy-V2P3yDhCd74RvHjCDzlTfrGMolZZE0pcQ"

NSMutableArray *originalHashArrayOfCharFromString = [NSMutableArray array]; 
for (int i = 0; i < [hash length]; i++) { 
    [originalHashArrayOfCharFromString addObject:[NSString stringWithFormat:@"%C", [hash characterAtIndex:i]]]; 
} 

//1 change 
NSString *backslashRplecedInHashString = hash; 
backslashRplecedInHashString = [backslashRplecedInHashString stringByReplacingOccurrencesOfString:@"/" withString:@"_"]; 
NSMutableArray *hashConvertBackslashToUnderline = [NSMutableArray array]; 
for (int i = 0; i < [hash length]; i++) { 
    [hashConvertBackslashToUnderline addObject:[NSString stringWithFormat:@"%C", [backslashRplecedInHashString characterAtIndex:i]]]; 
} 
//2 change 
NSString *minusRplecedInHashString = hash; 
minusRplecedInHashString = [minusRplecedInHashString stringByReplacingOccurrencesOfString:@"-" withString:@"+"]; 
NSMutableArray *hashConvertMinusToPlus = [NSMutableArray array]; 
for (int i = 0; i < [hash length]; i++) { 
    [hashConvertMinusToPlus addObject:[NSString stringWithFormat:@"%C", [minusRplecedInHashString characterAtIndex:i]]]; 
} 

//3 change 
NSString *underlineRplecedInHashString = hash; 
underlineRplecedInHashString = [underlineRplecedInHashString stringByReplacingOccurrencesOfString:@"_" withString:@"/"]; 
NSMutableArray *hashConvertUnderlineToBackslash = [NSMutableArray array]; 
for (int i = 0; i < [hash length]; i++) { 
    [hashConvertUnderlineToBackslash addObject:[NSString stringWithFormat:@"%C", [underlineRplecedInHashString characterAtIndex:i]]]; 
} 

//4 change 
NSString *plusRplecedInHashString = hash; 
plusRplecedInHashString = [plusRplecedInHashString stringByReplacingOccurrencesOfString:@"+" withString:@"-"]; 
NSMutableArray *hashConvertPlusToMinus = [NSMutableArray array]; 
for (int i = 0; i < [hash length]; i++) { 
    [hashConvertPlusToMinus addObject:[NSString stringWithFormat:@"%C", [plusRplecedInHashString characterAtIndex:i]]]; 
} 

NSMutableArray *tempArrayForKey = [[NSMutableArray alloc] init]; 
NSMutableArray *tempArrayForValue = [[NSMutableArray alloc] init]; 
int possitionInTempArray = 0; 

//Store all changes of original array in a temp array 
//1 replace 
for (int countPosssition = 0 ; countPosssition < [hash length]; countPosssition++) { 
    if ([originalHashArrayOfCharFromString objectAtIndex:countPosssition] != [hashConvertBackslashToUnderline objectAtIndex:countPosssition]) { 
     [tempArrayForValue addObject:[hashConvertBackslashToUnderline objectAtIndex:countPosssition]]; 
     [tempArrayForKey addObject:[NSNumber numberWithInt:countPosssition]]; 
     possitionInTempArray++; 
    } 
} 
//2 replace 
for (int countPosssition = 0 ; countPosssition < [hash length]; countPosssition++) { 
    if ([originalHashArrayOfCharFromString objectAtIndex:countPosssition] != [hashConvertMinusToPlus objectAtIndex:countPosssition]) { 

     [tempArrayForValue addObject:[hashConvertMinusToPlus objectAtIndex:countPosssition]]; 
     [tempArrayForKey addObject:[NSNumber numberWithInt:countPosssition]]; 
     possitionInTempArray++; 

    } 

} 
//3 replace 
for (int countPosssition = 0 ; countPosssition < [hash length]; countPosssition++) { 
    if ([originalHashArrayOfCharFromString objectAtIndex:countPosssition] != [hashConvertUnderlineToBackslash objectAtIndex:countPosssition]) { 

     [tempArrayForValue addObject:[hashConvertUnderlineToBackslash objectAtIndex:countPosssition]]; 
     [tempArrayForKey addObject:[NSNumber numberWithInt:countPosssition]]; 
     possitionInTempArray++; 
    } 
} 
//4 replace 
for (int countPosssition = 0 ; countPosssition < [hash length]; countPosssition++) { 
    if ([originalHashArrayOfCharFromString objectAtIndex:countPosssition] != [hashConvertPlusToMinus objectAtIndex:countPosssition]) { 

     [tempArrayForValue addObject:[hashConvertPlusToMinus objectAtIndex:countPosssition]]; 
     [tempArrayForKey addObject:[NSNumber numberWithInt:countPosssition]]; 
     possitionInTempArray++; 
    } 
} 
NSLog(tempArrayForKey.debugDescription); 
NSLog(tempArrayForValue.debugDescription); 
// use the them array to submit changes 
for (int count = 0; count < tempArrayForKey.count; count++) { 
     [originalHashArrayOfCharFromString setObject:[tempArrayForValue objectAtIndex:count] atIndexedSubscript:(int)[tempArrayForKey objectAtIndex:count]]; 
} 
[hash setString:@""]; 
//Reassemble the hash string using his original array that sufferet modificvations 
for (int count = 0; count<originalHashArrayOfCharFromString.count; count++) { 
    [hash appendString:[NSString stringWithFormat:@"%@", [originalHashArrayOfCharFromString objectAtIndex:count]]]; 
} 


NSLog(hash); 

Answer 1

당신은 스왑에 데이터가 손실과 같은 것을하지 않을 것이다, 그래서 당신은 일시적으로 "임시"문자로 사건을 교환하면 어떻게 이 :

NSString * initialString = @"lRocUK/Qy+V2P3yDhCd74RvHjCDzlTfrGMolZZE0pcQ"; 
    initialString =[initialString stringByReplacingOccurrencesOfString:@"/" withString:@"^"]; 
    initialString =[initialString stringByReplacingOccurrencesOfString:@"-" withString:@"*"]; 
    initialString =[initialString stringByReplacingOccurrencesOfString:@"+" withString:@"-"]; 
    initialString =[initialString stringByReplacingOccurrencesOfString:@"*" withString:@"+"]; 
    initialString =[initialString stringByReplacingOccurrencesOfString:@"_" withString:@"/"]; 
    initialString =[initialString stringByReplacingOccurrencesOfString:@"^" withString:@"_"];