diff --git a/02. Linked lists/2.2. return_kth_to_last.md b/02. Linked lists/2.2. return_kth_to_last.md
index 84a623c..fe56d6f 100644
--- a/02. Linked lists/2.2. return_kth_to_last.md	
+++ b/02. Linked lists/2.2. return_kth_to_last.md	
@@ -10,7 +10,7 @@ class Node {
     int data;
 
     public Node(int d){
-        data = d;
+        this.data = d;
     }
 
     void appendToTail(int d){
diff --git a/02. Linked lists/delete_node.java b/02. Linked lists/hackerrank/delete_node.java
similarity index 100%
rename from 02. Linked lists/delete_node.java
rename to 02. Linked lists/hackerrank/delete_node.java
diff --git a/02. Linked lists/get_kth_node_value.java b/02. Linked lists/hackerrank/get_kth_node_value.java
similarity index 100%
rename from 02. Linked lists/get_kth_node_value.java
rename to 02. Linked lists/hackerrank/get_kth_node_value.java
diff --git a/08. Recursion/8.3. magic_index.md b/08. Recursion/8.3. magic_index.md
index dd93896..2943262 100644
--- a/08. Recursion/8.3. magic_index.md	
+++ b/08. Recursion/8.3. magic_index.md	
@@ -1,6 +1,6 @@
 # 8.3. Magic index
 
-## Given an array of **distinct** integers, find a magix index, ifo ne exists. A magic index in an array A is an index such that A[i] = 1
+## Given an array of **distinct** integers, find a magix index, if one exists. A magic index in an array A is an index such that A[i] = 1
 
 ## First idea
 
diff --git a/16. Moderate problems/16.17. max_subarray.md b/16. Moderate problems/16.17. max_subarray.md
index a3b77e5..e50dba3 100644
--- a/16. Moderate problems/16.17. max_subarray.md	
+++ b/16. Moderate problems/16.17. max_subarray.md	
@@ -1,8 +1,8 @@
 # 16.8. Contiguous sequence or Maximum subarray problem
 
-## Given an array of integers, both negative and positive, find the contiguous sequence with the largest sum. Return the sum
+> Given an array of integers, both negative and positive, find the contiguous sequence with the largest sum. Return the sum
 
-> example:
+Example:
 
 ```bash
 nums = [2, -8, 3, -2, 4, -10]
@@ -101,4 +101,4 @@ We only want negative numbers inculded in the sequence when they are in the midd
 
 My code is exactly the same as the solution! (except for some unecessary variables I had).
 
-If all numbers in the array are negative, can we consider a subsequence of length = 0 and thus maxval = 0? or does it need to have 1+ values? this is a good thing to consider with the interviewer.
\ No newline at end of file
+If all numbers in the array are negative, can we consider a subsequence of length = 0 and thus maxval = 0? or does it need to have 1+ values? this is a good thing to consider with the interviewer.