//二進(jìn)制轉(zhuǎn)十進(jìn)制

- (NSString*)toDecimalSystemWithBinarySystem:(NSString*)binary

{

intll =0;

inttemp =0;

for(inti =0; i < binary.length; i ++)

{

temp = [[binarysubstringWithRange:NSMakeRange(i,1)]intValue];

temp = temp *powf(2, binary.length- i -1);

ll += temp;

}

NSString* result = [NSStringstringWithFormat:@"%d",ll];

returnresult;

}