BlueJ Program on Sentence and Frequency Of Words

Input a paragraph containing ‘n’ number of sentences where (1<=n<=4). The words are to be separated with single blank space and are in upper case. A sentence may be terminated either with a full stop (.) or question mark (?).

Perform the followings:(i) Enter the number of sentences, if it exceeds the limit show a message.

(ii)  Find the number of words in the paragraph

(iii)  Display the words in ascending order with frequency.

import java.io.*;

import java.util.*;

class Bank

{

String s,str,sarr[],strarr[];

StringTokenizer st;

int i,j,n,c,index=0,fre[],index1=0;

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

public void take() throws IOException

{

System.out.println("Enter the Number of sentences:"); n=Integer.parseInt(br.readLine()); 

if(n< 1 || n >4)

{ 

System.out.println("Wrong Input..."); return;

}

System.out.println("Enter the Paragraph:"); str=br.readLine();

st=new StringTokenizer(str,",.? ");

n=st.countTokens();

System.out.println("Number of Words in the paragraph="+n);

sarr=new String[n];

strarr=new String[n];

fre=new int[n];

while(st.hasMoreTokens())

{

sarr[index++]=st.nextToken();

}

for(i=0;i< index-1;i++)

{

for(j=i+1;j< index;j++)

{

if(sarr[i].compareTo(sarr[j]) >0)

{

s=sarr[i];

sarr[i]=sarr[j];

sarr[j]=s;

}

}

} 

c=1;

s=sarr[0];

for(i=1;i< index;i++)

{

if(!s.equals(sarr[i]))

{

strarr[index1]=s;

fre[index1++]=c;

c=1;

s=sarr[i];

}

else

c++;

}

strarr[index1]=s;

fre[index1++]=c;

for(i=0;i

{

for(j=i+1;j< index1;j++)

{

if(fre[i] >fre[j])

{

n=fre[i];

fre[i]=fre[j];

fre[j]=n;

s= strarr[i];

strarr[i]=strarr[j];

strarr[j]=s;

}

}

}

System.out.println("WORD           FREQUENCY");

for(i=0;i< index1;i++)

System.out.println(strarr[i]+"    "+fre[i]);

}

}

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