Find a pair of numbers from an array whose sum equals k
Objective: Write an algorithm to find out whether in a given array there exists or not two numbers whose sum is exactly equals to a given number. This problem has been asked in Amazon...
Tagged: Beginner
Check If String has All Unique Characters
Objective: Write an algorithm to find out whether in a given string contains all the unique characters. This question has been asked in the Amazon and Microsoft interviews. Input: A String Output: True or...
Find Whether Given String is palindrome or Not.
Objective : Write an algorithm to find Whether Given String is palindrome or Not. Input: A String, Output: true or false on whether string is palindrome or not Approach: Use recursive approach Compare first...
Find a peak element in a Given Array
Objective : In this article we will discuss an algorithm to Find a peak element in a Given Array. We will see the recursion techniques to solve this problem. Peak Element: peak element is...
Find two Missing Numbers in a Sequence of Consecutive Numbers
Objective : Write an algorithm to find two Missing Numbers in a Sequence of Consecutive Numbers Input: Array, arrA[] with two missing numbers and Range Output : Two missing numbers Approach: Approach is very...
Find a Missing Number From a Sequence of Consecutive Numbers
Objective : You have been asked to Write an algorithm Find a Missing Number From a Sequence of Consecutive Numbers Input: Array, arrA[] with a missing number and Range Output : missing number Approach: Approach...
Hash Table Implementation
Objective : To implement a Hash Table Input: A set of pairs of keys and values Approach: Create a Hash Table Hashtable<Integer, String> ht = new Hashtable<Integer, String>(); Insert values in hash table using...
Binary Search
Objective : Write an algorithm to find an element in an sorted array Input: A sorted array, arrA[] and an key Output : Return true if element is found, else false. Approach: The idea...