Improved tasks 430, 3044, 3426

Author: javadev

src/main/kotlin/g0401_0500/s0430_flatten_a_multilevel_doubly_linked_list/readme.md

@@ -10,31 +10,36 @@ Return _the_ `head` _of the flattened list. The nodes in the list must have **al
 
 **Example 1:**
 
-![](https://assets.leetcode.com/uploads/2021/11/09/flatten11.jpg)
+![](https://leetcode-images.github.io/g0401_0500/s0430_flatten_a_multilevel_doubly_linked_list/flatten11.jpg)
 
 **Input:** head = [1,2,3,4,5,6,null,null,null,7,8,9,10,null,null,11,12]
 
 **Output:** [1,2,3,7,8,11,12,9,10,4,5,6]
 
-**Explanation:** The multilevel linked list in the input is shown. After flattening the multilevel linked list it becomes: ![](https://assets.leetcode.com/uploads/2021/11/09/flatten12.jpg)
+**Explanation:** The multilevel linked list in the input is shown. After flattening the multilevel linked list it becomes: ![](https://leetcode-images.github.io/g0401_0500/s0430_flatten_a_multilevel_doubly_linked_list/flatten12.jpg) 
 
 **Example 2:**
 
-![](https://assets.leetcode.com/uploads/2021/11/09/flatten2.1jpg)
+![](https://leetcode-images.github.io/g0401_0500/s0430_flatten_a_multilevel_doubly_linked_list/flatten21.jpg)
 
 **Input:** head = [1,2,null,3]
 
 **Output:** [1,3,2]
 
-**Explanation:** The multilevel linked list in the input is shown. After flattening the multilevel linked list it becomes: ![](https://assets.leetcode.com/uploads/2021/11/24/list.jpg)
+**Explanation:**
+
+    The multilevel linked list in the input is shown.
+    After flattening the multilevel linked list it becomes:
+
+![](https://leetcode-images.github.io/g0401_0500/s0430_flatten_a_multilevel_doubly_linked_list/list.jpg) 
 
 **Example 3:**
 
 **Input:** head = []
 
 **Output:** []
 
-**Explanation:** There could be empty list in the input.
+**Explanation:** There could be empty list in the input. 
 
 **Constraints:**
 
@@ -45,16 +50,26 @@ Return _the_ `head` _of the flattened list. The nodes in the list must have **al
 
 We use the multilevel linked list from **Example 1** above:
 
-1---2---3---4---5---6--NULL | 7---8---9---10--NULL | 11--12--NULL
+    1---2---3---4---5---6--NULL
+            |
+            7---8---9---10--NULL
+                |
+                11--12--NULL
 
 The serialization of each level is as follows:
 
-[1,2,3,4,5,6,null] [7,8,9,10,null] [11,12,null]
+    [1,2,3,4,5,6,null]
+    [7,8,9,10,null]
+    [11,12,null] 
 
 To serialize all levels together, we will add nulls in each level to signify no node connects to the upper node of the previous level. The serialization becomes:
 
-[1, 2, 3, 4, 5, 6, null] | [null, null, 7, 8, 9, 10, null] | [ null, 11, 12, null]
+    [1,    2,    3, 4, 5, 6, null]
+                 |
+    [null, null, 7,    8, 9, 10, null]
+                       |
+    [            null, 11, 12, null] 
 
 Merging the serialization of each level and removing trailing nulls we obtain:
 
-[1,2,3,4,5,6,null,null,null,7,8,9,10,null,null,11,12] 
+    [1,2,3,4,5,6,null,null,null,7,8,9,10,null,null,11,12] 

src/main/kotlin/g3001_3100/s3044_most_frequent_prime/readme.md

@@ -14,7 +14,7 @@ Return _the most frequent prime number **greater** than_ `10` _out of all the nu
 
 **Example 1:**
 
- **![](https://assets.leetcode.com/uploads/2024/02/15/south)** 
+ **![](https://leetcode-images.github.io/g3001_3100/s3044_most_frequent_prime/south.png)** 
 
  **Input:** mat = [[1,1],[9,9],[1,1]]
 

src/main/kotlin/g3401_3500/s3426_manhattan_distances_of_all_arrangements_of_pieces/readme.md

@@ -22,7 +22,7 @@ The Manhattan Distance between two cells <code>(x<sub>i</sub>, y<sub>i</sub>)</c
 
 The valid arrangements of pieces on the board are:
 
-![](https://assets.leetcode.com/uploads/2024/12/25/4040example1.drawio)![](https://assets.leetcode.com/uploads/2024/12/25/untitled-diagramdrawio.png)
+![](https://leetcode-images.github.io/g3401_3500/s3426_manhattan_distances_of_all_arrangements_of_pieces/untitled-diagramdrawio.png)
 
 *   In the first 4 arrangements, the Manhattan distance between the two pieces is 1.
 *   In the last 2 arrangements, the Manhattan distance between the two pieces is 2.
@@ -39,7 +39,7 @@ Thus, the total Manhattan distance across all valid arrangements is `1 + 1 + 1 +
 
 The valid arrangements of pieces on the board are:
 
-![](https://assets.leetcode.com/uploads/2024/12/25/4040example2drawio.png)
+![](https://leetcode-images.github.io/g3401_3500/s3426_manhattan_distances_of_all_arrangements_of_pieces/4040example2drawio.png)
 
 *   The first and last arrangements have a total Manhattan distance of `1 + 1 + 2 = 4`.
 *   The middle two arrangements have a total Manhattan distance of `1 + 2 + 3 = 6`.