创建不同长度的序列序列 [英] Create a sequence of sequences of different lengths

问题描述

我必须创建大量(> 10,000)不同长度的序列.我只知道向量形式的这些序列的长度.

I have to create a sequence of large number (> 10,000) of sequences of different lengths. I only know the lengths of these sequences in a vector form.

length_v <- c(2,3,4,4,2,6,11,75...................)

每个序列从1开始，以1为单位向前移动.最后一个序列(组合一个)，每个序列都必须一个接一个出现，不能混在一起.

Each sequence starts from 1 and moves forward in steps of 1. And in the final sequence (combined one), each sequence has to appear one after the other, they can't be jumbled up.

下面是一个小的演示示例:

A small demonstrating example is below:

我已经说了 4 个长度分别为 2、3、4、6 的序列.

I have say 4 sequences of length 2, 3, 4, 6 respectively.

s1 <- seq(1, 2)  # 1,2
s2 <- seq(1, 3)  # 1,2,3
s3 <- seq(1, 4)  # 1,2,3,4
s4 <- seq(1, 6)  # 1,2,3,4,5,6 

最终顺序是

final <- c(s1,s2,s3,s4) **# the order has to be this only. No compromise here.**

我无法使用 > 10,000 个序列来执行此操作，这会非常低效.有没有更简单的方法?

I can't do this with > 10,000 sequences which would be very inefficient. Is there any simpler way of doing this?

推荐答案

我们可以使用sequence

sequence(length_v)
#[1] 1 2 1 2 3 1 2 3 4 1 2 3 4 5 6

数据

length_v <- c(2,3,4,6)

这篇关于创建不同长度的序列序列的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！