RNA Transcription

Instructions

Given a DNA strand, return its RNA complement (per RNA transcription).

Both DNA and RNA strands are a sequence of nucleotides.

The four nucleotides found in DNA are adenine (A), cytosine (C), guanine (G) and thymine (T).

The four nucleotides found in RNA are adenine (A), cytosine (C), guanine (G) and uracil (U).

Given a DNA strand, its transcribed RNA strand is formed by replacing each nucleotide with its complement:

• G -> C
• C -> G
• T -> A
• A -> U

Input validation

This exercise does not require you to validate the input DNA strand. Each tested input contains only the characters A, C, G, or T.

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Source

Hyperphysics