Convert a string of hexadecimal characters to an array of nibbles (interview experience)

Question

I have seen this question unanswered in an interview experience

first of all, I need to understand the question,

(a nibble corresponds to single hex character right?) so, if given Hex string "12A" then the output should be

arr[0]=0001
arr[1]=0010
arr[2]=1010

is that correct or have i misunderstood?

if so how do i go about implementing this in C#? whats the type of arr here?

I think your last question there is a question for the one that interviews you. It could be string, it could be a numeric type. The format suggests numeric, but it also suggest base 10 notation, which is wrong/odd. — Lasse V. Karlsen, Nov 04 '13 at 10:48

score 2 · Accepted Answer · edited May 23 '17 at 12:03

2

A nibble is a four bit binary. As such you need three nibbles to represent 12A.

The arr you have there is incorrect - as there is no 2 in binary.

arr[0]=0001
arr[1]=0010
arr[2]=1010

edited May 23 '17 at 12:03

Community

answered Nov 04 '13 at 10:54

Kami

1 Answers1