labs

labs/lab10/CountLettere.java

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+// **************************************************************** 
+// CountLetters.java 
+// 
+// Reads a words from the standard input and prints the number of 
+// occurrences of each letter in that word. 
+// 
+// **************************************************************** 
+import java.util.Scanner; 
+public class CountLetterse 
+{ 
+ public static void main(String[] args) 
+ { 
+ int[] counts = new int[26]; 
+ Scanner scan = new Scanner(System.in); 
+ //get word from user 
+ System.out.print("Enter a single word (letters only, please): "); 
+ String word = scan.nextLine(); 
+ //convert to all upper case 
+ word = word.toUpperCase(); 
+ //count frequency of each letter in string 
+ for (int i=0; i < word.length(); i++) {
+    try {
+ char current = word.charAt(i);
+    counts[word.charAt(i)-'A']++; 
+    }
+    catch (Exception e){
+        System.out.println("Reason for error:"+"!"+(char)word.charAt(i)+"!");
+    }
+ }
+ //print frequencies 
+ System.out.println(); 
+ for (int i=0; i < counts.length; i++) 
+ if (counts [i] != 0) 
+ System.out.println((char)(i +'A') + ": " + counts[i]); 
+ } 
+}