摆动假设 – ruby中字符串数组的组合或排列

发布时间：2020-12-17 03:41:27 所属栏目：百科来源：网络整理

导读：我有一个带有4个字符串的 ruby数组 nucleotides = ['A','G','C','T'] 我需要4 ^ 3个字符串组合. new_array = ['AGC','AGT' .. 'TTT'] 这是遗传学中的摆动假设.有人可以解释我如何使用ruby实现这一目标. 解决方法 nucleotides = ['A','T'] (nucleotides*3).pe

我有一个带有4个字符串的 ruby数组

nucleotides = ['A','G','C','T']

我需要4 ^ 3个字符串组合.

new_array = ['AGC','AGT' .. 'TTT']

这是遗传学中的摆动假设.有人可以解释我如何使用ruby实现这一目标.

解决方法

nucleotides = ['A','T'] 
(nucleotides*3).permutation(3).to_a.map(&:join).uniq
#=> ["AGC","AGT","AGA","AGG","ACG","ACT","ACA","ACC","ATG","ATC","ATA","ATT","AAG","AAC","AAT","AAA","GAC","GAT","GAA","GAG","GCA","GCT","GCG","GCC","GTA","GTC","GTG","GTT","GGA","GGC","GGT","GGG","CAG","CAT","CAA","CAC","CGA","CGT","CGG","CGC","CTA","CTG","CTC","CTT","CCA","CCG","CCT","CCC","TAG","TAC","TAA","TAT","TGA","TGC","TGG","TGT","TCA","TCG","TCC","TCT","TTA","TTG","TTC","TTT"]

（编辑：李大同）

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