ds-algo-study/DS-n-Algos/Numbers_Math/base-converter/dec-2-otherBase.js

Just experimenting with publishing a package

class Stack {
  constructor() {
    this.count = 0;
    this.contents = {};
  }

  push(el) {
    this.contents[this.count] = el;
    this.count++;
  }

  pop() {
    if (this.isEmpty()) {
      return undefined;
    }
    this.count--;
    const result = this.contents[this.count];
    delete this.contents[this.count];
    return result;
  }

  peek() {
    if (this.isEmpty()) {
      return undefined;
    }
    return this.contents[this.count - 1];
  }

  isEmpty() {
    return this.count === 0;
  }

  size() {
    return this.count;
  }

  clear() {
    /* while (!this.isEmpty()) {
        this.pop();
      } */
    this.contents = {};
    this.count = 0;
  }

  toString() {
    if (this.isEmpty()) {
      return '';
    }
    let objString = `${this.contents[0]}`;
    for (let i = 1; i < this.count; i++) {
      objString = `${objString},${this.contents[i]}`;
    }
    return objString;
  }
}
//-------------------------------------------




function baseConverter ( decNumber, base ) {
  const lifoRemainder = new Stack();
  const digits = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';
  let number = decNumber;
  let rem;
  let baseString = '';

  if (!(base >= 2 && base <= 36)) {
    return '';
  }

  while (number > 0) {
    rem = Math.floor(number % base);
    lifoRemainder.push(rem);
    number = Math.floor(number / base);
  }

  while (!lifoRemainder.isEmpty()) {//stack instance method
    baseString += digits[lifoRemainder.pop()];
  }

  return baseString;
}
baseConverter ( 99, 2 ) 
console.log('baseConverter ( 99, 2 ) : ', baseConverter ( 99, 2 ) );
//baseConverter ( 99, 2 ) :  1100011