458. Poor Pigs in LeetCode Solution

In this blog, we are solving this problem.

There are buckets of liquid, where exactly one of the buckets is poisonous. To figure out which one is poisonous, you feed some number of (poor) pigs the liquid to see whether they will die or not. Unfortunately, you only have minutesToTest minutes to determine which bucket is poisonous.

You can feed the pigs according to these steps:

  1. Choose some live pigs to feed.
  2. For each pig, choose which buckets to feed it. The pig will consume all the chosen buckets simultaneously and will take no time.
  3. Wait for minutesToDie minutes. You may not feed any other pigs during this time.
  4. After minutesToDie minutes have passed, any pigs that have been fed the poisonous bucket will die, and all others will survive.
  5. Repeat this process until you run out of time.

Given buckets, minutesToDie, and minutesToTest, return the minimum number of pigs needed to figure out which bucket is poisonous within the allotted time.

Example 1:

Input: buckets = 1000, minutesToDie = 15, minutesToTest = 60
Output: 5

Example 2:

Input: buckets = 4, minutesToDie = 15, minutesToTest = 15
Output: 2

Example 3:

Input: buckets = 4, minutesToDie = 15, minutesToTest = 30
Output: 2

Constraints:

  • 1 <= buckets <= 1000
  • 1 <= minutesToDie <= minutesToTest <= 100

C++

class Solution {
public:
int poorPigs(int buckets, int minutesToDie, int minutesToTest) {
int times = minutesToTest / minutesToDie;
int result = 0;
while (pow(times + 1, result) < buckets) ++result;
return result;
}
};

Solution

--

--

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store
Ajay Dhangar

Ajay Dhangar

Hello, my name is Ajay Dhangar I’m a web developer with extensive experience for over 2 years. My expertise is to create and website design and more…