nodejs中500000条或更多条记录的排名生成

// 生成500,000条记录
const records = [];
for (let i = 0; i < 500000; i++) {
  records.push({
    id: i + 1,
    name: `Record ${i + 1}`
  });
}

// 使用快速排序对记录进行排序
function quickSort(arr) {
  if (arr.length <= 1) {
    return arr;
  }

  const pivotIndex = Math.floor(arr.length / 2);
  const pivot = arr.splice(pivotIndex, 1)[0];
  const left = [];
  const right = [];

  for (let i = 0; i < arr.length; i++) {
    if (arr[i].id < pivot.id) {
      left.push(arr[i]);
    } else {
      right.push(arr[i]);
    }
  }

  return [...quickSort(left), pivot, ...quickSort(right)];
}

const sortedRecords = quickSort(records);

// 为每个记录分配排名
for (let i = 0; i < sortedRecords.length; i++) {
  sortedRecords[i].rank = i + 1;
}

console.log(sortedRecords);