Interview Question for Software Engineer at eBay:

Sep 14, 2012

1. Need a hex to decimal lookup table (e.g. java hashmap).
2. Convert string to char[].
3. Find the location of decimal point 'K'.
double result;
char[] data; // input
for(i = K-1; i >= 0,; i--){
  result += lookup.get(data[i])*Math.pow(16,K-1-i);
}
for(i=K+1; i<data.length; i++){
  result += lookup.get(data[i])*Math.pow(16,-(i-K));
}
return result;

I haven't tested this, so test if before you use it.