Question

write a java program to find the frequency of the searched word in a string.
Sample input: Tata steel is a famous manufacturing company of steel.
Sample output: Steel is printed 2 times
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Answer 1

Explanation:

SOURCE CODE :

import java.util.Scanner;

public class Count_Words

{

public static void main(String[] args)

{

Scanner sc = new Scanner(System.in);

System.out.println("Enter any sentence below : ");

String text = sc.nextLine();

String[] keys = text.split(" ");

String[] uniqueKeys;

int count = 0;

uniqueKeys = getUniqueKeys(keys);

for(String key: uniqueKeys)

{

if(null == key)

{

break;

}

for(String s : keys)

{

if(key.equals(s))

{

count++;

}

}

System.out.println("Count of [ "+key+" ] is : "+count);

count=0;

}

}

private static String[] getUniqueKeys(String[] keys)

{

String[] uniqueKeys = new String[keys.length];

uniqueKeys[0] = keys[0];

int uniqueKeyIndex = 1;

boolean keyAlreadyExists = false;

for(int i=1; i<keys.length ; i++)

{

for(int j=0; j<=uniqueKeyIndex; j++)

{

if(keys[i].equals(uniqueKeys[j]))

{

keyAlreadyExists = true;

}

}

if(!keyAlreadyExists)

{

uniqueKeys[uniqueKeyIndex] = keys[i];

uniqueKeyIndex++;

}

keyAlreadyExists = false;

}

return uniqueKeys;

}

}

OUTPUT :

Enter any sentence below :

This is programming website whose name is CodezClub

Count of [ This ] is : 1

Count of [ is ] is : 2

Count of [ programming ] is : 1

Count of [ website ] is : 1

Count of [ whose ] is : 1

Count of [ name ] is : 1