如何生成具有某些属性的位序列

const crypto = require('crypto');

function generateRandomBitSequence(length) {
  const byteLength = Math.ceil(length / 8);
  const randomBytes = crypto.randomBytes(byteLength);
  let bitSequence = '';

  for (let i = 0; i < randomBytes.length; i++) {
    bitSequence += randomBytes[i].toString(2).padStart(8, '0');
  }

  return bitSequence.slice(0, length);
}

const bitSequence = generateRandomBitSequence(16);
console.log(bitSequence);

function generatePatternBitSequence(length, pattern) {
  let bitSequence = '';
  while (bitSequence.length < length) {
    bitSequence += pattern;
  }
  return bitSequence.slice(0, length);
}

const bitSequence = generatePatternBitSequence(16, '10');
console.log(bitSequence);

function generateStatisticalBitSequence(length, ratio) {
  const numOnes = Math.floor(length * ratio);
  const numZeros = length - numOnes;
  let bitSequence = '1'.repeat(numOnes) + '0'.repeat(numZeros);

  // 打乱位序列
  bitSequence = bitSequence.split('').sort(() => Math.random() - 0.5).join('');
  return bitSequence;
}

const bitSequence = generateStatisticalBitSequence(16, 0.5);
console.log(bitSequence);

const crypto = require('crypto');

// 生成固定长度的随机位序列
function generateRandomBitSequence(length) {
  const byteLength = Math.ceil(length / 8);
  const randomBytes = crypto.randomBytes(byteLength);
  let bitSequence = '';

  for (let i = 0; i < randomBytes.length; i++) {
    bitSequence += randomBytes[i].toString(2).padStart(8, '0');
  }

  return bitSequence.slice(0, length);
}

// 生成具有特定模式的位序列
function generatePatternBitSequence(length, pattern) {
  let bitSequence = '';
  while (bitSequence.length < length) {
    bitSequence += pattern;
  }
  return bitSequence.slice(0, length);
}

// 生成具有特定统计属性的位序列
function generateStatisticalBitSequence(length, ratio) {
  const numOnes = Math.floor(length * ratio);
  const numZeros = length - numOnes;
  let bitSequence = '1'.repeat(numOnes) + '0'.repeat(numZeros);

  // 打乱位序列
  bitSequence = bitSequence.split('').sort(() => Math.random() - 0.5).join('');
  return bitSequence;
}

// 示例用法
const randomBitSequence = generateRandomBitSequence(16);
console.log('Random Bit Sequence:', randomBitSequence);

const patternBitSequence = generatePatternBitSequence(16, '101');
console.log('Pattern Bit Sequence:', patternBitSequence);

const statisticalBitSequence = generateStatisticalBitSequence(16, 0.5);
console.log('Statistical Bit Sequence:', statisticalBitSequence);