198. 打家劫舍

/**
 * @param {number[]} nums
 * @return {number}
 */
var rob = function (nums) {
  if (nums.length === 0) {
    return 0
  }
  if (nums.length === 1) {
    return nums[0]
  }
  if (nums.length === 2) {
    return Math.max(nums[0], nums[1])
  }
  const dp = [nums[0], Math.max(nums[0], nums[1])]
  for (let i = 2; i < nums.length; i++) {
    dp[i] = Math.max(dp[i - 2] + nums[i], dp[i - 1])
  }
  return dp[nums.length - 1]
}