igrek8

function ipv42num(ipString: string) {
  const ipNumber = ipString.split('.');
  return ((((((+ipNumber[0]) * 256) + (+ipNumber[1])) * 256) + (+ipNumber[2])) * 256) + (+ipNumber[3]);
}

function num2ipv4(ipNumber: number) {
  let ipString = (ipNumber % 256).toString();
  for (let i = 3; i > 0; i--) {
    ipNumber = Math.floor(ipNumber / 256);
    ipString = ipNumber % 256 + '.' + ipString;

igrek8

export const resolveClasses = (rules: {
  [className: string]: () => boolean
}, ...persistedClasses: string[]): string => {
  let classes: string[] = [];
  Object.keys(rules).forEach((className) => {
    const isResolved = rules[className]();
    if (isResolved) {
      classes.push(className);
    } else {
      // should remove it

igrek8

import java.util.Arrays;

public class HelloWorld {
	
	public static String calcBase(final String value, final int fromBase, final int toBase) {
		
		// схема по всех возможных цифр для любой системы счистелния (максимальная 64)
		final char[] charArray = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".toCharArray();
		// схема цифр для изначальной системы счителния
		final char[] fromRange = Arrays.copyOfRange(charArray, 0, fromBase);