refactor 691

Author: fishercoder1534

src/main/java/com/fishercoder/solutions/_691.java

@@ -3,41 +3,6 @@
 import java.util.HashMap;
 import java.util.Map;
 
-/**
- * 691. Stickers to Spell Word
- *
- * We are given N different types of stickers. Each sticker has a lowercase English word on it.
- * You would like to spell out the given target string by cutting individual letters from your collection of stickers and rearranging them.
- * You can use each sticker more than once if you want, and you have infinite quantities of each sticker.
- * What is the minimum number of stickers that you need to spell out the target? If the task is impossible, return -1.
-
- Example 1:
- Input:
- ["with", "example", "science"], "thehat"
- Output:
- 3
-
- Explanation:
- We can use 2 "with" stickers, and 1 "example" sticker.
- After cutting and rearrange the letters of those stickers, we can form the target "thehat".
- Also, this is the minimum number of stickers necessary to form the target string.
-
- Example 2:
- Input:
- ["notice", "possible"], "basicbasic"
- Output:
- -1
-
- Explanation:
- We can't form the target "basicbasic" from cutting letters from the given stickers.
-
- Note:
- stickers has length in the range [1, 50].
- stickers consists of lowercase English words (without apostrophes).
- target has length in the range [1, 15], and consists of lowercase English letters.
- In all test cases, all words were chosen randomly from the 1000 most common US English words, and the target was chosen as a concatenation of two random words.
- The time limit may be more challenging than usual. It is expected that a 50 sticker test case can be solved within 35ms on average.
- */
 public class _691 {
     public static class Solution1 {
         /**