Question: Generate 10 random characters and store them in an array. Count and display the occurrence of each letter in the character array
Example:
Output 1:
h e b w v s k a b j
a:1
b:2
c:0
d:0
e:1
f:0
g:0
h:1
i:0
j:1
k:1
l:0
m:0
n:0
o:0
p:0
q:0
r:0
s:1
t:0
u:0
v:1
w:1
x:0
y:0
z:0
Output 2:
d r k u d e u b b v
a:0
b:2
c:0
d:2
e:1
f:0
g:0
h:0
i:0
j:0
k:1
l:0
m:0
n:0
o:0
p:0
q:0
r:1
s:0
t:0
u:2
v:1
w:0
x:0
y:0
z:0
package Array;
/**
* Created by aarushi on 1/5/21.
* Q: Generate 10 random characters and store in array. Count the occurrence of each letter in the character array
*/
public class ArrayCountLetters {
public static char[] createRandomCharArray (char [] ch){
for (int i=0; i< ch.length; i++){
//generate a random number between 0 and 25
int randNumber= (int)(Math.random()*25);
//the ascii values of lower case letters range from 97-122
//add the random value to 97 and type cast it to char to get a random lower case character
ch[i]= (char)(97+randNumber);
//display the random character
System.out.print(ch[i] + " ");
}
//return the char array
return ch;
}
public static void displayArray (int [] count){
for(int i=0; i<count.length; i++){
//display in the form "<letter>: <count>"
System.out.println(((char)(97+i))+ ":" + count[i]);
}
}
public static void main (String [] args){
//create an integer array of size 26 to store the count of each letter
int [] count= new int[26];
//initialize each element to 0
for (int i=0; i<count.length; i++){
count[i]=0;
}
char ch[]= new char[10];
ch= createRandomCharArray(ch);
for (int i=0; i<ch.length; i++){
//increase the count of the letter
count[(int)(ch[i]-97)]++;
}
System.out.println();
displayArray(count);
}
}