Compare two strings uising identical()

There is another method to compare string using identical() function. An identical function is used in R to check whether two R objects are equal/ identical or not.

R




# Define two strings(str1 and str2)
String_1 <- "w3wiki"
String_2 <- "w3wiki"
  
# identical() to compare two string and return true or false
ans <- identical(tolower(String_1),tolower(String_2))
  
# Conditional if statement to check whether ans is true or not
if (ans) {
  cat("The strings are equal")
} else {
  cat("The strings are not equal")
}


Output:

The strings are equal
  • In this example we have made both the string in lower case using tolower() function and passed it in identical() function. The function compares them and output is true i.e. “The strings are equal” since, the string have now become equal.

Program to Compare two Strings in R

String comparison is a common operation where two strings are compared in a case sensitive manner and check whether they are equal or not. In this article you will learn the various way in which you can compare two string in R language.

Similar Reads

Concepts Related to the Topic :

String Comparison: Comparison of two strings and check whether they are equal or not. Equality Operators (==): It is used to compare two string for equality and inequality. Case Sensitivity: In R language programming strings are considers as case-sensitive by default. There are functions like tolower() or toupper() to make case-insensitive comparison. tolower(): tolower() is the function to convert the string to lower case. toupper(): toupper() is the function to convert string to upper case. identical(): indentical() is function to compare two string and true or false according to the input string. grepl(): grepl() is function to compare two string partially....

Strings

A collection of character variables make up a string. There is only one dimension to the cast of characters. In R, a string is defined as one or more letters surrounded in a pair of matching single or double quotes. In R programming, strings are used to represent textual material and can include special characters, digits, and spaces. ” is used to denote an empty string. R Strings are always kept in double-quoted form in storage. Single quotes may appear inside of a double-quoted string. Single quotes are not permitted in single-quoted strings. In a similar vein, double quotations cannot be enclosed in double quotes....

Steps Needed :

Define the two strings you want to compare. Use a comparison operator (== or !=) to compare the strings. Use functions like tolower() or toupper() for case-insensitive comparisons. Use grepl() for partial comparision. Use identical() for string comparision. Use if condition and print the result....

Case-sensitive comparison

In this example we have compare two string in case sensitive....

Case-Insensitive comparison

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Compare two strings uising identical()

In this example we have compare two string in case Insensitive....

Compare two strings partially using grepl()

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