从十进制到二进制

function decimalToBinary(decNumber){
    const remStack = new Stack();
  let number = decNumber,
      rem,
      binaryString = '';
  while(number > 0){
      rem = Math.floor(number % 2);
    remStack.push(rem);
    number = Math.floor(number / 2);
  }
  while(!remStack.isEmpty()){
      binaryString += remStack.pop().toString();
  }
  return binaryString;
}

进制转换算法

可以把十进制转换为基数为 2 ~ 36 的任意进制

function baseConverter(decNumber, base){
    const remStack = new Stack();
  const digits = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';
  let number = decNumber,
      rem,
      baseString = '';
  while(number > 0){
      rem = Math.floor(number % base);
    remStack.push(rem);
    number = Math.floor(number / base);
  }
  while(!remStack.isEmpty()){
      binaryString += digits[remStack.pop()];
  }
  return baseString;
}