ICSE Class 10 Computer Applications
Question 20 of 46
String Handling — Question 20
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Question Question 7
Write a program to input a string in uppercase and print the frequency of each character.
Sample Input : COMPUTER HARDWARE
Sample Output
Character Frequency
A 2
C 1
D 1
E 2
H 1
M 1
0 1
p 1
R 1
import java.util.Scanner;
public class KboatLetterFreq
{
public static void main(String args[]) {
Scanner in = new Scanner(System.in);
System.out.println("Enter a sentence:");
String str = in.nextLine();
str = str.toUpperCase();
int freqMap[] = new int[26];
int len = str.length();
for (int i = 0; i < len; i++) {
char ch = str.charAt(i);
if (Character.isLetter(ch)) {
int chIdx = ch - 65;
freqMap[chIdx]++;
}
}
System.out.println("Character\tFrequency");
for (int i = 0; i < freqMap.length; i++) {
if (freqMap[i] > 0) {
System.out.println((char)(i + 65)
+ "\t\t" + freqMap[i]);
}
}
}
}Output
