在数组中查找，返回相同的行，向左两列

function findSameRows(arr) {
  const result = [];

  for (let i = 0; i < arr.length; i++) {
    for (let j = 2; j < arr[i].length; j++) {
      if (arr[i][j] === arr[i][j - 1] && arr[i][j] === arr[i][j - 2]) {
        result.push(arr[i]);
        break;
      }
    }
  }

  return result;
}

// 示例用法
const array = [
  [1, 2, 3, 4, 5],
  [6, 7, 8, 8, 9],
  [10, 11, 12, 12, 12],
  [13, 14, 15, 16, 17]
];

const sameRows = findSameRows(array);
console.log(sameRows);