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Calculate the frequency of characters in a string

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0

$begingroup$

Problem

I wrote this program to check the number of times that each letter appears in a string input by the user. It works fine, but is there a more efficient or alternative solutions of going about this task than reiterating through a twenty-six-element-long array for every single character?

Code

import java.util.Scanner;
public class Letters 
 public static void main(String[] args) 
 @SuppressWarnings("resource")
 Scanner sc = new Scanner(System.in);
 char[] c = 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z';
 int[] f = 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0;
 System.out.println("Enter a string.");
 String k = sc.nextLine();
 String s = k.toUpperCase();
 s = s.trim();
 int l = s.length();
 System.out.println("Checking string = " + s);
 char ch;
 for (int i = 0; i < l; i++) 
 ch = s.charAt(i);
 for (int j = 0; j < c.length; j++) 
 if (ch == c[j]) 
 f[j]++;
 
 
 
 System.out.println("ChartFreq");
 for (int i = 0; i < c.length; i++) 
 if (f[i] != 0) 
 System.out.println(c[i] + "t" + f[i]);
 
 
 

java

share

asked 8 mins ago

Artemis HunterArtemis Hunter

11

New contributor

Artemis Hunter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

$endgroup$

add a comment | 

0

$begingroup$

Problem

I wrote this program to check the number of times that each letter appears in a string input by the user. It works fine, but is there a more efficient or alternative solutions of going about this task than reiterating through a twenty-six-element-long array for every single character?

Code

import java.util.Scanner;
public class Letters 
 public static void main(String[] args) 
 @SuppressWarnings("resource")
 Scanner sc = new Scanner(System.in);
 char[] c = 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z';
 int[] f = 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0;
 System.out.println("Enter a string.");
 String k = sc.nextLine();
 String s = k.toUpperCase();
 s = s.trim();
 int l = s.length();
 System.out.println("Checking string = " + s);
 char ch;
 for (int i = 0; i < l; i++) 
 ch = s.charAt(i);
 for (int j = 0; j < c.length; j++) 
 if (ch == c[j]) 
 f[j]++;
 
 
 
 System.out.println("ChartFreq");
 for (int i = 0; i < c.length; i++) 
 if (f[i] != 0) 
 System.out.println(c[i] + "t" + f[i]);
 
 
 

java

share

asked 8 mins ago

Artemis HunterArtemis Hunter

11

New contributor

Artemis Hunter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

$endgroup$

add a comment | 

$begingroup$

Problem

I wrote this program to check the number of times that each letter appears in a string input by the user. It works fine, but is there a more efficient or alternative solutions of going about this task than reiterating through a twenty-six-element-long array for every single character?

Code

import java.util.Scanner;
public class Letters 
 public static void main(String[] args) 
 @SuppressWarnings("resource")
 Scanner sc = new Scanner(System.in);
 char[] c = 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z';
 int[] f = 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0;
 System.out.println("Enter a string.");
 String k = sc.nextLine();
 String s = k.toUpperCase();
 s = s.trim();
 int l = s.length();
 System.out.println("Checking string = " + s);
 char ch;
 for (int i = 0; i < l; i++) 
 ch = s.charAt(i);
 for (int j = 0; j < c.length; j++) 
 if (ch == c[j]) 
 f[j]++;
 
 
 
 System.out.println("ChartFreq");
 for (int i = 0; i < c.length; i++) 
 if (f[i] != 0) 
 System.out.println(c[i] + "t" + f[i]);
 
 
 

java

share

asked 8 mins ago

Artemis HunterArtemis Hunter

11

New contributor

Artemis Hunter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

$endgroup$

import java.util.Scanner;
public class Letters 
 public static void main(String[] args) 
 @SuppressWarnings("resource")
 Scanner sc = new Scanner(System.in);
 char[] c = 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z';
 int[] f = 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0;
 System.out.println("Enter a string.");
 String k = sc.nextLine();
 String s = k.toUpperCase();
 s = s.trim();
 int l = s.length();
 System.out.println("Checking string = " + s);
 char ch;
 for (int i = 0; i < l; i++) 
 ch = s.charAt(i);
 for (int j = 0; j < c.length; j++) 
 if (ch == c[j]) 
 f[j]++;
 
 
 
 System.out.println("ChartFreq");
 for (int i = 0; i < c.length; i++) 
 if (f[i] != 0) 
 System.out.println(c[i] + "t" + f[i]);
 
 
 

share

asked 8 mins ago

Artemis HunterArtemis Hunter

11

New contributor

Artemis Hunter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share

asked 8 mins ago

Artemis HunterArtemis Hunter

11

New contributor

Artemis Hunter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 8 mins ago

Artemis HunterArtemis Hunter

11

New contributor

Artemis Hunter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 8 mins ago

Artemis HunterArtemis Hunter

11