Count Number of Characters in String in R

In this article, we are going to see how to get the number of characters in a string in R Programming Language. The number of characters in a string refers to the length of the string.

Examples:

Input: Geeksforgeeks
Output: 13
Explanation: Total 13 characters in the given string.

Input: Hello world
Output: 11

This can be calculated using the below-mentioned functions:

• Using nchar() method
• Using str_length() method
• Using stri_length() method

Method 1: Using nchar() method.

nchar() method in R programming is used to get the length of a string.

Syntax:

nchar(string)

Parameter: string

Return: Returns the length of a string

Example: To calculate length

# Given String
gfg <- "Geeks For Geeks"

# Using nchar() method
answer <- nchar(gfg)

print(answer)

[1] 15

The string "Geeks For Geeks" has 15 characters, including spaces.

This method can be used to return the length of multiple strings passed as a parameter.

nchar(c("Hello World!","Akshit"));

[1] 12  6

Method 2. Using str_length () method.

The function str_length() belonging to the ‘stringr’ package can be used to determine the length of strings in R.

Syntax:

str_length (str)

Parameter: string as str

Return value: Length of string

Example: To find length

# Importing package
library(stringr)

# Calculating length of string    
str_length("hello")

Output:

[1] 5

This method can be used to return the length of multiple strings passed as a parameter.

library(stringr);

str_length(c("Hello World!","Akshit"));

Output:

[1] 12  6

Method 3. Using stri_length() method.

This function returns the number of code points in each string.

Syntax:

stri_length(str)

Parameter: str as character vector

Return Value: Returns an integer vector of the same length as str.

Example:

stri_length(c("Akshit"));

Output:

[1] 6

This method can be used to return the length of multiple strings passed as a parameter.

library(stringi);

stri_length(c("Hello World","Akshit"));

Output:

[1] 11  6