JavaScript:将对象的嵌套数组中的数字相加

function sumNestedNumbers(obj) {
  let sum = 0;

  function traverse(value) {
    if (typeof value === 'number') {
      sum += value;
    } else if (Array.isArray(value)) {
      value.forEach(item => traverse(item));
    } else if (typeof value === 'object' && value !== null) {
      Object.values(value).forEach(item => traverse(item));
    }
  }

  traverse(obj);
  return sum;
}

// 示例对象
const exampleObj = {
  a: 1,
  b: [2, { c: 3, d: [4, 5] }],
  e: { f: [6], g: 7 }
};

console.log(sumNestedNumbers(exampleObj)); // 输出应该是 28

function sumNestedNumbersSafe(obj, seen = new WeakSet()) {
  if (seen.has(obj)) return 0;
  seen.add(obj);

  let sum = 0;
  function traverse(value) {
    if (typeof value === 'number') {
      sum += value;
    } else if (Array.isArray(value)) {
      value.forEach(item => traverse(item));
    } else if (typeof value === 'object' && value !== null) {
      Object.values(value).forEach(item => traverse(item));
    }
  }

  traverse(obj);
  return sum;
}