This algorithm shows the position of the letter in the

Question

This algorithm shows the position of the letter in the

alphabet. How to do the opposite when there is a number, and you need a letter?

public static void main(String args[]) {

String s = "HUYES";
String t = "";
for (int i = 0; i < s.length(); ++i) {
char ch = s.charAt(i);
if (Character.isLetter(ch)) { // check if the character is a letter
if (!t.isEmpty()) {
t += " ";
}
int n = (int) ch - (int) 'A'; // if you want to check, then add 'A'+ 1. Where the beginning of the alphabet begins with 1
t += String.valueOf(n);
}
}
System.out.println(t);
}

0

20.03.2021

6 ответов

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Manav | avoid unnecessary messaging me

Manav | avoid unnecessary messaging me
Get ascii code of 'A', add the number and then use...

^ this can be a source of errors. So make sure you aren't doing something silly

0

20.03.2021

𝚃𝚊𝚢𝚕𝚘𝚛 𝚁𝚘𝚜𝚎 Автор вопроса

Manav | avoid unnecessary messaging me
^ this can be a source of errors. So make sure you...

i just need to have a number from 0-25 and convert to alphabetical order and get the letter

0

20.03.2021

Manav | avoid unnecessary messaging me

𝚃𝚊𝚢𝚕𝚘𝚛 𝚁𝚘𝚜𝚎
i just need to have a number from 0-25 and convert...

I gave you the whole snippet and you're still asking me that o.O

0

20.03.2021

Dmytro Buryak

holy moly, that's so ... cryptic. I would never understood what this code is doing without extra description. Why not just do it more straightforward? class EnglishAlphabet { static String alphabet = "abcdefghijklmnopqrstuvwxyz"; int positionInAlphabet(char letter) { return alphabet.indexOf(letter); } Character letterAtPosition(int pos) { if (0 <= pos && pos < alphabet.length()) { return alphabet.charAt(pos); } else { return null; // or throw if you want to be NPE-free } } } More readable. More maintainable - just imagine that some day comes PO and says "Ok, now we need to support Spanish and French".

0

20.03.2021

𝚃𝚊𝚢𝚕𝚘𝚛 𝚁𝚘𝚜𝚎 Автор вопроса

Dmytro Buryak
holy moly, that's so ... cryptic. I would never un...

thanks to you I understood my shortcomings

0

20.03.2021

Manav | avoid unnecessary messaging me · Accepted Answer

Manav | avoid unnecessary messaging me

Get ascii code of 'A', add the number and then use the ascii code to convert to char char c = ((int)'A' + num)

0

20.03.2021

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This algorithm shows the position of the letter in the

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