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Java-based LeetCode algorithm problem solutions, regularly updated
198\. House Robber
Medium
You are a professional robber planning to rob houses along a street. Each house has a certain amount of money stashed, the only constraint stopping you from robbing each of them is that adjacent houses have security systems connected and **it will automatically contact the police if two adjacent houses were broken into on the same night**.
Given an integer array `nums` representing the amount of money of each house, return _the maximum amount of money you can rob tonight **without alerting the police**_.
**Example 1:**
**Input:** nums = [1,2,3,1]
**Output:** 4
**Explanation:**
Rob house 1 (money = 1) and then rob house 3 (money = 3).
Total amount you can rob = 1 + 3 = 4.
**Example 2:**
**Input:** nums = [2,7,9,3,1]
**Output:** 12
**Explanation:**
Rob house 1 (money = 2), rob house 3 (money = 9) and rob house 5 (money = 1).
Total amount you can rob = 2 + 9 + 1 = 12.
**Constraints:**
* `1 <= nums.length <= 100`
* `0 <= nums[i] <= 400`