Package g0401_0500.s0433_minimum_genetic_mutation

Class Solution

java.lang.Object

g0401_0500.s0433_minimum_genetic_mutation.Solution

public class Solution
extends Object

433 - Minimum Genetic Mutation\. Medium A gene string can be represented by an 8-character long string, with choices from `'A'`, `'C'`, `'G'`, and `'T'`. Suppose we need to investigate a mutation from a gene string `start` to a gene string `end` where one mutation is defined as one single character changed in the gene string. * For example, `"AACCGGTT" --> "AACCGGTA"` is one mutation. There is also a gene bank `bank` that records all the valid gene mutations. A gene must be in `bank` to make it a valid gene string. Given the two gene strings `start` and `end` and the gene bank `bank`, return _the minimum number of mutations needed to mutate from_ `start` _to_ `end`. If there is no such a mutation, return `-1`. Note that the starting point is assumed to be valid, so it might not be included in the bank. **Example 1:** **Input:** start = "AACCGGTT", end = "AACCGGTA", bank = ["AACCGGTA"] **Output:** 1 **Example 2:** **Input:** start = "AACCGGTT", end = "AAACGGTA", bank = ["AACCGGTA","AACCGCTA","AAACGGTA"] **Output:** 2 **Example 3:** **Input:** start = "AAAAACCC", end = "AACCCCCC", bank = ["AAAACCCC","AAACCCCC","AACCCCCC"] **Output:** 3 **Constraints:** * `start.length == 8` * `end.length == 8` * `0 <= bank.length <= 10` * `bank[i].length == 8` * `start`, `end`, and `bank[i]` consist of only the characters `['A', 'C', 'G', 'T']`.

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
int	minMutation(String start, String end, String[] bank)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Solution

public Solution()

Method Details

minMutation

public int minMutation(String start,
 String end,
 String[] bank)