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 Find Minimum and Maximum

We can find the minimum and the maximum of a vector using the min() or the max() function.

A function called range() is also available which returns the minimum and maximum in a two element vector.

Example: Find Minimum and Maximum


              
> x
[1]  5  8  3  9  2  7  4  6 10

> # find the minimum
> min(x)
[1] 2

> # find the maximum
> max(x)
[1] 10

> # find the range
> range(x)
[1]  2 10

If we want to find where the minimum or maximum is located, i.e. the index instead of the actual value, then we can use which.min() and which.max() functions.

Note that these functions will return the index of the first minimum or maximum in case multiple of them exists.


              
> x
[1]  5  8  3  9  2  7  4  6 10

> # find index of the minimum
> which.min(x)
[1] 5

> # find index of the minimum
> which.max(x)
[1] 9

> # alternate way to find the minimum
> x[which.min(x)]
[1] 2