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Converter HexToBinary BinaryStringToDecimalNumber HexStringToInt 본문
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+ (NSString*)convertHexToBinary:(NSString*)hexString
{
NSMutableString *returnString = [NSMutableString string];
for(int i = 0; i < [hexString length]; i++)
{
char c = [[hexString lowercaseString] characterAtIndex:i];
switch(c) {
case '0': [returnString appendString:@"0000"]; break;
case '1': [returnString appendString:@"0001"]; break;
case '2': [returnString appendString:@"0010"]; break;
case '3': [returnString appendString:@"0011"]; break;
case '4': [returnString appendString:@"0100"]; break;
case '5': [returnString appendString:@"0101"]; break;
case '6': [returnString appendString:@"0110"]; break;
case '7': [returnString appendString:@"0111"]; break;
case '8': [returnString appendString:@"1000"]; break;
case '9': [returnString appendString:@"1001"]; break;
case 'a': [returnString appendString:@"1010"]; break;
case 'b': [returnString appendString:@"1011"]; break;
case 'c': [returnString appendString:@"1100"]; break;
case 'd': [returnString appendString:@"1101"]; break;
case 'e': [returnString appendString:@"1110"]; break;
case 'f': [returnString appendString:@"1111"]; break;
default : break;
}
}
return returnString;
}
+ (NSNumber *)convertBinaryStringToDecimalNumber:(NSString *)binaryString {
NSUInteger totalValue = 0;
for (int i = 0; i < binaryString.length; i++) {
totalValue += (int)([binaryString characterAtIndex:(binaryString.length - 1 - i)] - 48) * pow(2, i);
}
return @(totalValue);
}
+ (int)convertHexStringToInt:(NSString*)hexString{
unsigned int outVal;
NSScanner* scanner = [NSScanner scannerWithString:hexString];
[scanner scanHexInt:&outVal];
return outVal;
}
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cs |
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