Problem I want to order columns of a dataframe using a substring of the column name only. Suppose my columns […]

# Tag: r

## Cumulative transition matrix Markov Chain simulation

Problem I have a cumulative transition matrix with probabilities for all the possible states from 1 to 5. Now the […]

## Fizz, Buzz, or FizzBuzz?

Problem I was messing around online at work the other day when our phone systems went down. I came across […]

## Trial Multiplication for Factorization

Problem I am trying a trial multiplication for factorization. This is a general example, but each sequence can be specified […]

## UK postcode validation and format correction tool

Problem I’ve been working on a regex-based UK postcode validation and format correction tool – with the aim of creating […]

## R Regex : Need only numeric figures [closed]

Problem Closed. This question is off-topic. It is not currently accepting answers. Closed 3 years ago. Lacks concrete context: Code […]

## Remove all characters except

Problem My code takes a string and replaces all characters which are not: English letters Numbers , / – I […]

## Extracting initials with R

Problem Playing around in R with a Edx CS50 homework. The job is meant to be done in C, I […]

## Number of occurence of two letters separted by a finit gap

Problem Lets we have a string Seq of size N and contain z alphabet { A,B,C….}. I have to perform […]

## Round a number and replace trailing zeros by spaces

Problem Goal From a number x, I would like a string of the rounded value at n decimals and replace […]

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