Course

Additional

Find the Statistical Mode Write to a File Format Decimal Places

Data Frames

Convert a List to a Dataframe Create an Empty Dataframe Combine Two Dataframe into One Change Column Name of a Dataframe Extract Columns From a Dataframe Drop Columns in a Dataframe Reorder Columns in a Dataframe Split Dataframe Merge Multiple Dataframes Delete Rows From Dataframe Make a List of Dataframes

Introduction

"Hello World" Program Add Two Vectors Find Sum, Mean and Product of Vector in R Programming Take Input From User Generate Random Number from Standard Distributions Sample from a Population Find Minimum and Maximum Sort a Vector

Strings

Concatenate Two Strings Find the Length of a String Check if Characters are Present in a String Extract n Characters From a String Replace Characters in a String Compare two Strings Convert Factors to Characters Trim Leading and Trailing Whitespaces

Vectors

Concatenate a Vector of Strings Check if a Vector Contains the Given Element Count the Number of Elements in a Vector Find Index of an Element in a Vector Access Values in a Vector Add Leading Zeros to Vector

Decision and Loops

Find the Factorial of a Number R Multiplication Table Check Prime Number check Armstrong Number Print the Fibonacci Sequence Check for Leap Year Check if a Number is Odd or Even in R Programming Check if a Number is Positive, Negative or Zero Find the Sum of Natural Numbers

Functions

Convert Decimal into Binary using Recursion in R Find the Factorial of a Number Using Recursion Find the Factors of a Number Fibonacci Sequence Using Recursion in R Find H.C.F. or G.C.D.Find L.C.M.Make a Simple Calculator Sum of Natural Numbers Using Recursion

R Program to Trim Leading and Trailing Whitespaces

Example 1: Remove Whitespaces in R


              
text1 <- "     Programiz Pro         "

# remove whitespaces using trimws()
print(trimws(text1))

Output


              
[1] "Programiz Pro"

In the above example, we have used the trimws() function to remove the leading and trailing whitespace. It doesn’t remove whitespace that appears in the middle.

Example 2: Remove Leading Whitespaces in R


              
text1 <- "     Programiz Pro         "

# remove leading whitespaces using trimws()
print(trimws(text1, "l"))

Output


              
[1] "Programiz Pro         "

In the above example, we have passed "l" inside the trimws() function to remove the leading whitespaces in the text1 string.

Example 3: Remove Trailing Whitespaces in R


              
text1 <- "     Programiz Pro         "

# remove trailing whitespaces using trimws()
print(trimws(text1, "r"))

Output


              
[1] "     Programiz Pro"

In the above example, we have passed "r" inside the trimws() function to remove the trailing whitespaces in the text1 string.