Count each element in string array

Question

Hey guys this is my code for splitting the array first without using any inbuilt functions. It works fine, my question is in the second part.

static String[] split(String ss) {

    String[] a = new String[1];
    String s = "";
    for (int i = 0; i < ss.length(); i++) {
        if (ss.charAt(i) == ' ') {
            s += ", "
        } else {
          s += ss.charAt(i);
        }
        for (int j = 0; j < a.length; j++) {
            a[j] = "[" + s  + "]";
        }
    }
    return a;


}

I need now to count each letter in a word and give it out also without inbuilt functions as split, chartoarray and so on. this is to what i came so far.

 for example String="This is just an example". it should give out 
 This=4
 is=2
 ..

static String[][] LettersCount(String[] array) {

    int count=0;
    String [][] a =new String[array.length][array.length];
     String s= "" + Arrays.toString(array);
        for (int i = 0; i < s.length(); i++) {
            if (s.charAt(i) == ' ') {
                count = 0;
            } else {
                count++;
            }

You can modify this solution to count words instead of characters — Nir Alfasi
– Nir Alfasi, Commented May 10, 2018 at 21:58
The code you give that supposed to work "fine" doesn't work at all. How can you have an argument named "String s" and 2 lines after having another variable named "s" ? — George Z.
– George Z., Commented May 10, 2018 at 22:02
@Antoniossss has already answered it. Well, look also how bucket sort(algorithms) work. Simply create bucket for each letter and then let them fall in their own bucket. — Luai Ghunim
– Luai Ghunim, Commented May 10, 2018 at 22:29

Antoniossss · Accepted Answer · 2018-05-10 22:11:42Z

5

You can use property of character that it has a numerical value after all. Lets use it as index and store the counts in an array. (so we will mimic Map this way)

int[] counter = new int[256] ;// this will hold count of all letters
counter[(int) character]++; // this is how you do the counting

edited May 10, 2018 at 22:11

answered May 10, 2018 at 22:01

Antoniossss

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2 Comments

Patrick Parker Over a year ago

The char data type is a single 16-bit Unicode character. It has a minimum value of '\u0000' (or 0) and a maximum value of '\uffff' (or 65,535 inclusive).

Devon Rutledge Over a year ago

@PatrickParker true but most standard characters fit within the first 256

Amit · Accepted Answer · 2018-05-10 23:33:22Z

0

public class JavaArrayLengthTest {
   public static void main(String[] args) {
String[] testArray = { "A", "B", "C" };
int arrayLength = testArray.length;
System.out.println("The length of the array is: " + arrayLength);
}
}

answered May 10, 2018 at 23:33

Amit

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