Linked List Fundamentals and Algorithmic Challenges
Linked List Structure
A linked list organizes data in a linear sequence using nodes. Each node contains a data element and a pointer to the subsequent node. The initial node is called the head.
Variants of Linked Lists
Singly Linked List
Nodes contain a single pointer to the next node.
Doubly Linked List
Nodes maintain two pointers: one to the ...
Posted on Wed, 19 Aug 2026 16:27:08 +0000 by opido
Essential Algorithms for Coding Interviews: Merging Arrays, Linked Lists, and Tree Operations
Arrays and Strings
Merging Sorted Arrays
Naive Merge and Sort
class Solution {
public:
void combineArrays(vector<int>& arr1, int m, vector<int>& arr2, int n) {
for(int i = 0; i < n; ++i) {
arr1[m + i] = arr2[i];
}
sort(arr1.begin(), arr1.end());
}
};
Two-Pointer Forward Merg ...
Posted on Wed, 01 Jul 2026 18:08:43 +0000 by byronwells