C Sharp Extension Method
You probably came across the following declaration in C# and wonder what the hell does keyword this do. namespace ConsoleApplication1 { public static class Numbers { public static int AddOne(this …
Coding Exercise – Restore IP Addresses – C++ – Online Judge
October 31, 2013
algorithms, brute force, code, code library, implementation, programming languages, string
2 Comments
Question: Given a string containing only numbers, restore it by returning all possible IP addresses (in a vector) Original Problem Page: http://oj.leetcode.com/problems/restore-ip-addresses/ Examples: Given "25525511135", return . (Order does not matter) A …
How to Perform Case-insensitive Valid Palindrome AlphaNum String Check?
October 30, 2013
algorithms, c / c++, interview questions, javascript, programming languages, string
No Comments
Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. Note: For the purpose of this problem, we define empty string as valid …
Coding Exercise – Remove Element – C++ – Online Judge
October 30, 2013
algorithms, beginner, c / c++, data structure, implementation, interview questions, programming languages, tricks
No Comments
Question: Given an array and a element, remove all instances of that value in place and return the new length. The order of elements can be changed and it …
Coding Exercise – Remove Duplicates From Sorted List – C++ – Online Judge
October 29, 2013
algorithms, beginner, brute force, c / c++, code, implementation, interview questions, programming languages
2 Comments
Question : Given a sorted list represented by a directional link structure (as follows), remove the duplicates and return the new list. /** * Definition for singly-linked list. * …
How to Check If Two Binary Trees are the Same?
October 29, 2013
algorithms, c / c++, data structure, javascript, learn to code, recursive
No Comments
Given two binary trees (defined structure in C++ as follows), check if they are identical (same tree structure and the values to the nodes are also the same): /** …