筛选嵌套数组以查找唯一的产品集合

function findUniqueProducts(nestedArray) {
  // Step 1: 提取所有元素到新数组
  let flatArray = [];
  flattenArray(nestedArray, flatArray);

  // Step 2: 去除重复元素
  let uniqueProducts = Array.from(new Set(flatArray));

  return uniqueProducts;
}

function flattenArray(arr, result) {
  for (let i = 0; i < arr.length; i++) {
    if (Array.isArray(arr[i])) {
      flattenArray(arr[i], result);
    } else {
      result.push(arr[i]);
    }
  }
}

// 示例数据
let nestedArray = [
  [1, 2, 3],
  [2, 3, 4],
  [3, 4, 5],
  [4, 5, 6]
];

let uniqueProducts = findUniqueProducts(nestedArray);
console.log(uniqueProducts);