Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;

public class Main {
    public static long bytesRequiredToEncode(final String s, final Charset encoding) {
        int ENCODE_CHUNK = 100;
        long count = 0;
        for (int i = 0; i < s.length();) {
            int end = i + ENCODE_CHUNK;
            if (end >= s.length()) {
                end = s.length();
            } else if (Character.isHighSurrogate(s.charAt(end))) {
                end++;
            }
            count += encoding.encode(s.substring(i, end)).remaining() + 1;
            i = end;
        }
        return count;
    }

    public static void main(String[] args) {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < 100; i++) {
            sb.appendCodePoint(1064124);
        }
        Charset cs = StandardCharsets.UTF_8;

        System.out.println(bytesRequiredToEncode(new String(sb), cs));
        System.out.println(new String(sb).getBytes(cs).length);
    }
}