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 Add Leading Zeros to Vector

Example 1: Using paste0() to add Leading Zeros to R Vectors


              
employee_id <- c(11, 12, 13, 14)

# add leading zeros
result <- paste0("0", employee_id)

print(result)

Output


              
[1] "011" "012" "013" "014"

In the above example, we have used the paste0() function to add zero at the beginning of each vector element.


              
paste0("0", employee_id)

Here, inside paste0() we have passed,

"0" - number of leading zeros we want to add
employee_id - the name of the vector

Example 2: Using sprintf() to add Leading Zeros to R Vectors


              
employee_id <- c(11, 12, 13, 14)

# add leading zeros
sprintf("%004d", employee_id)

Output


              
[1] "0011" "0012" "0013" "0014"

Here, we have passed the sprintf() function to add 2 zeros at the beginning of each vector element.

The formatting code %004d inside sprintf() means add 2 leading zeros and format vector elements as an integer of width 4.