Description:
Deoxyribonucleic acid (DNA) is a chemical found in the nucleus of cells and carries the "instructions" for the development and functioning of living organisms.
If you want to know more http://en.wikipedia.org/wiki/DNA
In DNA strings, symbols "A" and "T" are complements of each other, as "C" and "G". You have a function with one side of the DNA (string, except for Haskell); you need to get the other complementary side. DNA strand is never empty or there is no DNA at all (again, except for Haskell).
More similar exercise are found here http://rosalind.info/problems/list-view/ (source)
DNA_strand ("ATTGC") # return "TAACG" DNA_strand ("GTAT") # return "CATA"
SECTION .text global dna_strand extern strdup dna_strand: call strdup xor rcx,rcx .b:movzx rdx,byte[rax+rcx] mov dl,[.replace+rdx-'A'] mov [rax+rcx],dl inc rcx cmp byte[rax+rcx],0 jne .b ret .replace db 'T',0,'G',0,0,0,'C' times 'T'-'H' db 0 db 'A'
代码摘自：https://www.codewars.com/kata/554e4a2f232cdd87d9000038/solutions
代码是codewar上面的，记录一下这总写法，过几天自己再来写一遍这道题，并且使用该方法