将具有共享值的数组中的对象合并到二维子数组中

function mergeObjectsIntoSubarrays(arr) {
  // 步骤1：将具有相同共享值的对象分组到临时对象中
  const tempObj = {};
  for (let i = 0; i < arr.length; i++) {
    const obj = arr[i];
    const sharedValue = obj.sharedValue;
    if (tempObj[sharedValue]) {
      tempObj[sharedValue].push(obj);
    } else {
      tempObj[sharedValue] = [obj];
    }
  }

  // 步骤2：将每个共享值对应的对象数组合并到二维子数组中
  const result = [];
  for (const sharedValue in tempObj) {
    const subarray = tempObj[sharedValue];
    result.push(subarray);
  }

  return result;
}

// 示例用法
const arr = [
  { sharedValue: 1, name: 'A' },
  { sharedValue: 2, name: 'B' },
  { sharedValue: 1, name: 'C' },
  { sharedValue: 3, name: 'D' },
  { sharedValue: 2, name: 'E' },
];
const mergedArray = mergeObjectsIntoSubarrays(arr);
console.log(mergedArray);

[
  [
    { sharedValue: 1, name: 'A' },
    { sharedValue: 1, name: 'C' }
  ],
  [
    { sharedValue: 2, name: 'B' },
    { sharedValue: 2, name: 'E' }
  ],
  [
    { sharedValue: 3, name: 'D' }
  ]
]