CODEWITHSUNDEEP
rregexstringr
sdihlenfeldt
sdihlenfeldt

Reputation: 21

How to match up to and including a condition with Regex in R?

I have data formatted as a string of 1s and 0s, similar to the following:

string <- c("110010100010101000000011100101")

From it, I want to extract all mutually exclusive strings that:

So for the string I presented above, using str_extract_all(), I want the output to look like:

[1] "11001010001010100000" "11100101"

Instead, I get:

> str_extract_all(string,"1(\\d+)(0{0,10})")
[[1]]
[1] "110010100010101000000011100101"

How might I edit the R regex expression to achieve this goal? Could this be done using grep functions in R instead of stringr?

Upvotes: 2

Views: 110

Answers (1)

Austin Graves
Austin Graves

Reputation: 1052

library(stringr)

string <- c("110010100010101000000011100101")

str_extract_all(string, '1[0-1]*?(0{5}|$)')
#> [[1]]
#> [1] "11001010001010100000" "11100101"

Upvotes: 3

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