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Code Core

Check if string contains Substring

In computer programming, a string is a sequence of characters that are stored as a single data entity. A substring, on the other hand, is a sequence of characters that is contained within a larger string. In other words, a substring is a smaller string that is part of a larger string. The concept of substrings is important in computer programming because it allows developers to manipulate and analyze data in more precise ways. In this article, we will explore the meaning of strings and substrings in greater detail.

A string can be thought of as a sequence of characters that are enclosed within a pair of quotation marks. For example, the string "Hello, World!" contains 13 characters, including spaces and punctuation. Strings are used to represent text data in computer programming, and they are commonly used in applications such as web development, data processing, and text analysis.

Here mentioned some code examples.

/*
    Java Program for
    Check if string contains Substring
*/
public class Substring
{
	public static void main(String[] args)
	{
		String text = "This is good algorithms to solve this problem";
		// Test A
		String value = "it";
		if (text.contains(value))
		{
			System.out.print(value + " exists\n");
		}
		else
		{
			System.out.print(value + " not exists\n");
		}
		// Test B
		value = "algos";
		if (text.contains(value))
		{
			System.out.print(value + " exists\n");
		}
		else
		{
			System.out.print(value + " not exists\n");
		}
		// Test C
		value = "solve";
		if (text.contains(value))
		{
			System.out.print(value + " exists\n");
		}
		else
		{
			System.out.print(value + " not exists\n");
		}
	}
}

Output

it exists
algos not exists
solve exists
// Include header file
#include <iostream>

#include <string>

using namespace std;
/*
    C++ Program for
    Check if string contains Substring
*/
int main()
{
	string text = "This is good algorithms to solve this problem";
	// Test A
	string value = "it";
	if (text.find(value) != string::npos)
	{
		cout << value << " exists\n";
	}
	else
	{
		cout << value << " not exists\n";
	}
	// Test B
	value = "algos";
	if (text.find(value) != string::npos)
	{
		cout << value << " exists\n";
	}
	else
	{
		cout << value << " not exists\n";
	}
	// Test C
	value = "solve";
	if (text.find(value) != string::npos)
	{
		cout << value << " exists\n";
	}
	else
	{
		cout << value << " not exists\n";
	}
	return 0;
}

Output

it exists
algos not exists
solve exists
// Include namespace system
using System;
/*
    Csharp Program for
    Check if string contains Substring
*/
public class Substring
{
	public static void Main(String[] args)
	{
		String text = "This is good algorithms to solve this problem";
		// Test A
		String value = "it";
		if (text.Contains(value))
		{
			Console.Write(value + " exists\n");
		}
		else
		{
			Console.Write(value + " not exists\n");
		}
		// Test B
		value = "algos";
		if (text.Contains(value))
		{
			Console.Write(value + " exists\n");
		}
		else
		{
			Console.Write(value + " not exists\n");
		}
		// Test C
		value = "solve";
		if (text.Contains(value))
		{
			Console.Write(value + " exists\n");
		}
		else
		{
			Console.Write(value + " not exists\n");
		}
	}
}

Output

it exists
algos not exists
solve exists
package main
import "fmt"
import "strings"
/*
    Go Program for
    Check if string contains Substring
*/

func main() {
	var text string = "This is good algorithms to solve this problem"
	// Test A
	var value string = "it"
	if strings.Contains(text, value) {
		fmt.Print(value, " exists\n")
	} else {
		fmt.Print(value, " not exists\n")
	}
	// Test B
	value = "algos"
	if strings.Contains(text, value) {
		fmt.Print(value, " exists\n")
	} else {
		fmt.Print(value, " not exists\n")
	}
	// Test C
	value = "solve"
	if strings.Contains(text, value) {
		fmt.Print(value, " exists\n")
	} else {
		fmt.Print(value, " not exists\n")
	}
}

Output

it exists
algos not exists
solve exists
<?php
/*
    Php Program for
    Check if string contains Substring
*/
function main()
{
	$text = "This is good algorithms to solve this problem";
	// Test A
	$value = "it";
	if (strpos($text, $value) !== false)
	{
		echo($value." exists\n");
	}
	else
	{
		echo($value." not exists\n");
	}
	// Test B
	$value = "algos";
	if (strpos($text, $value) !== false)
	{
		echo($value." exists\n");
	}
	else
	{
		echo($value." not exists\n");
	}
	// Test C
	$value = "solve";
	if (strpos($text, $value) !== false)
	{
		echo($value." exists\n");
	}
	else
	{
		echo($value." not exists\n");
	}
}
main();

Output

it exists
algos not exists
solve exists
/*
    Node JS Program for
    Check if string contains Substring
*/

function main()
{
	var text = "This is good algorithms to solve this problem";
	// Test A
	var value = "it";
	if (text.includes(value))
	{
		process.stdout.write(value + " exists\n");
	}
	else
	{
		process.stdout.write(value + " not exists\n");
	}
	// Test B
	value = "algos";
	if (text.includes(value))
	{
		process.stdout.write(value + " exists\n");
	}
	else
	{
		process.stdout.write(value + " not exists\n");
	}
	// Test C
	value = "solve";
	if (text.includes(value))
	{
		process.stdout.write(value + " exists\n");
	}
	else
	{
		process.stdout.write(value + " not exists\n");
	}
}
main();

Output

it exists
algos not exists
solve exists
#    Python 3 Program for
#    Check if string contains Substring

def main() :
	text = "This is good algorithms to solve this problem"
	#  Test A
	value = "it"
	if (value in text) :
		print(value ," exists")
	else :
		print(value ," not exists")
	
	#  Test B
	value = "algos"
	if (value in text) :
		print(value ," exists")
	else :
		print(value ," not exists")
	
	#  Test C
	value = "solve"
	if (value in text) :
		print(value ," exists")
	else :
		print(value ," not exists")
	

if __name__ == "__main__": main()

Output

it  exists
algos  not exists
solve  exists
#    Ruby Program for
#    Check if string contains Substring
class Substring end

def main() 
	text = "This is good algorithms to solve this problem"
	#  Test A
	value = "it"
	if (text.include? value) 
		print(value ," exists\n")
	else
 
		print(value ," not exists\n")
	end

	#  Test B
	value = "algos"
	if (text.include? value) 
		print(value ," exists\n")
	else
 
		print(value ," not exists\n")
	end

	#  Test C
	value = "solve"
	if (text.include? value) 
		print(value ," exists\n")
	else
 
		print(value ," not exists\n")
	end

end

main()

Output

it exists
algos not exists
solve exists
/*
    Scala Program for
    Check if string contains Substring
*/
class Substring()
{}
object Main
{
	def main(args: Array[String]): Unit = {
		var text: String = "This is good algorithms to solve this problem";
		// Test A
		var value: String = "it";
		if (text.contains(value))
		{
			print(value + " exists\n");
		}
		else
		{
			print(value + " not exists\n");
		}
		// Test B
		value = "algos";
		if (text.contains(value))
		{
			print(value + " exists\n");
		}
		else
		{
			print(value + " not exists\n");
		}
		// Test C
		value = "solve";
		if (text.contains(value))
		{
			print(value + " exists\n");
		}
		else
		{
			print(value + " not exists\n");
		}
	}
}

Output

it exists
algos not exists
solve exists
import Foundation
/*
    Swift 4 Program for
    Check if string contains Substring
*/

func main()
{
	let text: String = "This is good algorithms to solve this problem";
	// Test A
	var value: String = "it";
	if (text.contains(value))
	{
		print(value ," exists");
	}
	else
	{
		print(value ," not exists");
	}
	// Test B
	value = "algos";
	if (text.contains(value))
	{
		print(value ," exists");
	}
	else
	{
		print(value ," not exists");
	}
	// Test C
	value = "solve";
	if (text.contains(value))
	{
		print(value ," exists");
	}
	else
	{
		print(value ," not exists");
	}
}
main();

Output

it  exists
algos  not exists
solve  exists
/*
    Kotlin Program for
    Check if string contains Substring
*/

fun main(args: Array < String > ): Unit
{
	val text: String = "This is good algorithms to solve this problem";
	// Test A
	var value: String = "it";
	if (text.contains(value))
	{
		print(value + " exists\n");
	}
	else
	{
		print(value + " not exists\n");
	}
	// Test B
	value = "algos";
	if (text.contains(value))
	{
		print(value + " exists\n");
	}
	else
	{
		print(value + " not exists\n");
	}
	// Test C
	value = "solve";
	if (text.contains(value))
	{
		print(value + " exists\n");
	}
	else
	{
		print(value + " not exists\n");
	}
}

Output

it exists
algos not exists
solve exists

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