Write a java code snippet to do the following:
fill a charecter array with random lower-case letters.
Create a second integer array to count how many of each letter was used.
Output the results:
Solution
import java.util.Random;
/**
* @author
*
*/
public class CountLetters {
/**
* @param args
*/
public static void main(String[] args) {
try {
Random r = new Random();
char[] array = new char[26];
int[] counts = new int[26];
// to generate random letters
System.out.print(\"Random characters: \");
for (int i = 0; i < array.length; i++) {
array[i] = (char) (r.nextInt(26) + 97);
System.out.print(array[i]);
}
// count characters
for (int i = 0; i < array.length; i++) {
counts[(int) array[i] - 97] += 1;
}
System.out.println();
// print the statistics
for (int i = 0; i < array.length; i++) {
if (counts[i] != 0)
System.out.println((char) (i + 97) + \" \"
+ counts[(int) array[i] - 97]);
}
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
}
OUTPUT:
TEST 1:
Random characters: cguatsdtlenlvsousogyusvacb
a 2
b 2
c 3
d 2
e 2
g 1
l 2
n 4
o 2
s 2
t 1
u 3
v 4
y 2
TEST 2:
Random characters: udppxxnocwxoyeejanulyhxmry
a 2
c 2
d 2
e 4
h 2
j 1
l 2
m 3
n 2
o 2
p 1
r 2
u 3
w 4
x 1
y 1
.
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Write a java code snippet to do the following- fill a charecter array.docx
1. Write a java code snippet to do the following:
fill a charecter array with random lower-case letters.
Create a second integer array to count how many of each letter was used.
Output the results:
Solution
import java.util.Random;
/**
* @author
*
*/
public class CountLetters {
/**
* @param args
*/
public static void main(String[] args) {
try {
Random r = new Random();
char[] array = new char[26];
int[] counts = new int[26];
// to generate random letters
System.out.print("Random characters: ");
for (int i = 0; i < array.length; i++) {
array[i] = (char) (r.nextInt(26) + 97);
System.out.print(array[i]);
}
2. // count characters
for (int i = 0; i < array.length; i++) {
counts[(int) array[i] - 97] += 1;
}
System.out.println();
// print the statistics
for (int i = 0; i < array.length; i++) {
if (counts[i] != 0)
System.out.println((char) (i + 97) + " "
+ counts[(int) array[i] - 97]);
}
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
}
OUTPUT:
TEST 1:
Random characters: cguatsdtlenlvsousogyusvacb
a 2
b 2
c 3
d 2
e 2
g 1
l 2
n 4
o 2
s 2
t 1
u 3
v 4
y 2
TEST 2:
Random characters: udppxxnocwxoyeejanulyhxmry
a 2
c 2
3. d 2
e 4
h 2
j 1
l 2
m 3
n 2
o 2
p 1
r 2
u 3
w 4
x 1
y 1
![Write a java code snippet to do the following:
fill a charecter array with random lower-case letters.
Create a second integer array to count how many of each letter was used.
Output the results:
Solution
import java.util.Random;
/**
* @author
*
*/
public class CountLetters {
/**
* @param args
*/
public static void main(String[] args) {
try {
Random r = new Random();
char[] array = new char[26];
int[] counts = new int[26];
// to generate random letters
System.out.print("Random characters: ");
for (int i = 0; i < array.length; i++) {
array[i] = (char) (r.nextInt(26) + 97);
System.out.print(array[i]);
}](https://image.slidesharecdn.com/writeajavacodesnippettodothefollowing-fillacharecterarray-230210035230-d8f54025/85/Write-a-java-code-snippet-to-do-the-following-fill-a-charecter-array-docx-1-320.jpg)
![// count characters
for (int i = 0; i < array.length; i++) {
counts[(int) array[i] - 97] += 1;
}
System.out.println();
// print the statistics
for (int i = 0; i < array.length; i++) {
if (counts[i] != 0)
System.out.println((char) (i + 97) + " "
+ counts[(int) array[i] - 97]);
}
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
}
OUTPUT:
TEST 1:
Random characters: cguatsdtlenlvsousogyusvacb
a 2
b 2
c 3
d 2
e 2
g 1
l 2
n 4
o 2
s 2
t 1
u 3
v 4
y 2
TEST 2:
Random characters: udppxxnocwxoyeejanulyhxmry
a 2
c 2](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)