add 079, 212 problem description, progress

Author: yennanliu

data/progress.md

@@ -1,5 +1,8 @@
 # Progress
 
+# 2024-12-27
+- https://github.com/yennanliu/CS_basics/blob/master/doc/Leetcode_company_frequency-master/Google%206months-%20LeetCode.pdf
+
 # 2024-12-22
 - https://github.com/yennanliu/CS_basics/blob/master/doc/Leetcode_company_frequency-master/Google%206months-%20LeetCode.pdf
 

data/progress.txt

@@ -1,3 +1,4 @@
+20241227: 079,212
 20241222: 369,311
 20241221: 370
 20241220: 815,871,593,1109

data/to_review.txt

@@ -1,28 +1,32 @@
+2025-02-20 -> ['079,212']
 2025-02-15 -> ['369,311']
 2025-02-14 -> ['370']
 2025-02-13 -> ['815,871,593,1109']
 2025-02-07 -> ['560,523']
 2025-02-01 -> ['304,853,325']
+2025-01-30 -> ['079,212']
 2025-01-26 -> ['370(todo)']
 2025-01-25 -> ['369,311']
 2025-01-24 -> ['370', '34,767']
 2025-01-23 -> ['815,871,593,1109']
 2025-01-20 -> ['722,380']
 2025-01-19 -> ['33,81']
-2025-01-17 -> ['560,523', '253']
+2025-01-17 -> ['079,212', '560,523', '253']
 2025-01-16 -> ['776,31']
 2025-01-15 -> ['004(todo),34(todo),162(todo),275(todo)']
 2025-01-14 -> ['986(todo),1229(todo),1868(todo),80(todo),209(todo),283(todo),360(todo),713(todo),532(todo),611(todo)']
 2025-01-12 -> ['369,311']
 2025-01-11 -> ['370', '304,853,325', '394']
 2025-01-10 -> ['815,871,593,1109', '833,950']
+2025-01-09 -> ['079,212']
 2025-01-05 -> ['370(todo)']
-2025-01-04 -> ['369,311', '560,523', '53,210,207']
+2025-01-04 -> ['079,212', '369,311', '560,523', '53,210,207']
 2025-01-03 -> ['370', '34,767', '444']
 2025-01-02 -> ['815,871,593,1109', '1188,130,855(again)']
-2024-12-30 -> ['369,311', '722,380']
-2024-12-29 -> ['370', '304,853,325', '33,81']
-2024-12-28 -> ['815,871,593,1109', '900']
+2025-01-01 -> ['079,212']
+2024-12-30 -> ['079,212', '369,311', '722,380']
+2024-12-29 -> ['079,212', '370', '304,853,325', '33,81']
+2024-12-28 -> ['079,212', '815,871,593,1109', '900']
 2024-12-27 -> ['369,311', '560,523', '253', '26,27', '802,1197,26']
 2024-12-26 -> ['370', '776,31']
 2024-12-25 -> ['369,311', '815,871,593,1109', '004(todo),34(todo),162(todo),275(todo)']

leetcode_java/src/main/java/LeetCodeJava/BackTrack/WordSearch.java

@@ -1,8 +1,43 @@
 package LeetCodeJava.BackTrack;
 
 // https://leetcode.com/problems/word-search/
-
-
+/**
+ * 79. Word Search
+ * Solved
+ * Medium
+ * Topics
+ * Companies
+ * Given an m x n grid of characters board and a string word, return true if word exists in the grid.
+ *
+ * The word can be constructed from letters of sequentially adjacent cells, where adjacent cells are horizontally or vertically neighboring. The same letter cell may not be used more than once.
+ *
+ *
+ *
+ * Example 1:
+ *
+ *
+ * Input: board = [["A","B","C","E"],["S","F","C","S"],["A","D","E","E"]], word = "ABCCED"
+ * Output: true
+ * Example 2:
+ *
+ *
+ * Input: board = [["A","B","C","E"],["S","F","C","S"],["A","D","E","E"]], word = "SEE"
+ * Output: true
+ * Example 3:
+ *
+ *
+ * Input: board = [["A","B","C","E"],["S","F","C","S"],["A","D","E","E"]], word = "ABCB"
+ * Output: false
+ *
+ *
+ * Constraints:
+ *
+ * m == board.length
+ * n = board[i].length
+ * 1 <= m, n <= 6
+ * 1 <= word.length <= 15
+ * board and word consists of only lowercase and uppercase English letters.
+ */
 public class WordSearch {
 
     // V0

leetcode_java/src/main/java/LeetCodeJava/BackTrack/WordSearch2.java

@@ -5,6 +5,43 @@
 import java.util.ArrayList;
 import java.util.List;
 
+/**
+ * 212. Word Search II
+ * Solved
+ * Hard
+ * Topics
+ * Companies
+ * Hint
+ * Given an m x n board of characters and a list of strings words, return all words on the board.
+ *
+ * Each word must be constructed from letters of sequentially adjacent cells, where adjacent cells are horizontally or vertically neighboring. The same letter cell may not be used more than once in a word.
+ *
+ *
+ *
+ * Example 1:
+ *
+ *
+ * Input: board = [["o","a","a","n"],["e","t","a","e"],["i","h","k","r"],["i","f","l","v"]], words = ["oath","pea","eat","rain"]
+ * Output: ["eat","oath"]
+ * Example 2:
+ *
+ *
+ * Input: board = [["a","b"],["c","d"]], words = ["abcb"]
+ * Output: []
+ *
+ *
+ * Constraints:
+ *
+ * m == board.length
+ * n == board[i].length
+ * 1 <= m, n <= 12
+ * board[i][j] is a lowercase English letter.
+ * 1 <= words.length <= 3 * 104
+ * 1 <= words[i].length <= 10
+ * words[i] consists of lowercase English letters.
+ * All the strings of words are unique.
+ *
+ */
 public class WordSearch2 {
 
     // V0