Question

java

8.3: Histogram
Design and implement an application that creates a histogram that allows you to visually inspect the frequency distribution of a set of values. The program should read in an arbitrary number of integers that are in the range 1 to 100 inclusive; then produce a chart similar to the one below that indicates how many input values fell in the range 1 to 10, 11 to 20, and so on. Print one asterisk for each value entered.

    1 - 10 | *****
   11 - 20 | ****
   21 - 30 | *********
   31 - 40 | **
   41 - 50 | **************
   51 - 60 | ******
   61 - 70 | ****
   71 - 80 | ********
   81 - 90 | *
  91 - 100 | ***

Answer 1

import java.util.*;

public class Sample{

public static void main(String args[]){

Scanner input=new Scanner(System.in);

int[] inner_limit=new int[]{1,11,21,31,41,51,61,71,81,91};

int[] outer_limit=new int[]{10,20,30,40,50,60,70,80,90,100};

int[] frq_cnt=new int[]{0,0,0,0,0,0,0,0,0,0};

System.out.println("Enter -1 for exit:");

int element;

while(true){

element=input.nextInt();

if(element==-1){break;}

for(int i=0;i<10;i++){

if(element>=inner_limit[i] && element<=outer_limit[i]){

frq_cnt[i]=frq_cnt[i]+1;

break;

}

}

}

for(int i=0;i<10;i++){

System.out.print(inner_limit[i]+" - "+outer_limit[i]+" | ");

for(int j=0;j<frq_cnt[i];j++){

System.out.print("*");

}System.out.println("");

}

}

}

#output: