如何从数组中返回特定的数字模式

function findNumberPattern(arr, pattern) {
  let result = [];
  let patternLength = pattern.length;

  for (let i = 0; i <= arr.length - patternLength; i++) {
    let subArray = arr.slice(i, i + patternLength);
    if (isEqual(subArray, pattern)) {
      result.push(subArray);
    }
  }

  return result;
}

function isEqual(arr1, arr2) {
  if (arr1.length !== arr2.length) {
    return false;
  }

  for (let i = 0; i < arr1.length; i++) {
    if (arr1[i] !== arr2[i]) {
      return false;
    }
  }

  return true;
}