Ruby programs/examples

Ruby programs/examples: In this section there are the set of the solved programs/examples of Ruby programming language with output and explanation.

Ruby basic programs

Ruby program to print Hello World!
Ruby program to add two integer numbers
Ruby program to find the area of the rectangle
Ruby program to print power of a number
Ruby program to print Fibonacci series
Ruby program to check whether the given number is prime or not
Ruby program to find factorial of a given number
Ruby program to find number of characters in a string (string length)
Ruby program to reverse a string
Ruby program to count the number of words in a string
Ruby program to print an array as string
Ruby program to check whether a variable is defined or not
Ruby program to check whether the hash contains specified key or not
Ruby program to convert the string into lowercase and uppercase
Ruby program to check whether a string contains a substring or not
Ruby program to generate random numbers
Ruby program to print an array
Ruby program to check whether an element exists in an array or not
Ruby program to calculate the sum of all even numbers
Ruby program to calculate the sum of all odd numbers up to N
Ruby program to count the number of digits in a number
Ruby program to print multiplication table of a number
Ruby program to sort an array with command line arguments

Ruby set programs

Print the elements of a set in Ruby
Find the length of a set in Ruby
Check the presence of an element in the set in Ruby
Join all the elements of two sets in Ruby
Find the common elements from two sets in Ruby
Find the difference between two sets in Ruby
Merge two sets in Ruby
Check whether the set is empty or not in Ruby
Delete and replace an element from the set in Ruby

TOP Interview Coding Problems/Challenges

Run-length encoding (find/print frequency of letters in a string)
Sort an array of 0's, 1's and 2's in linear time complexity
Checking Anagrams (check whether two string is anagrams or not)
Relative sorting algorithm
Finding subarray with given sum
Find the level in a binary tree with given sum K
Check whether a Binary Tree is BST (Binary Search Tree) or not
1[0]1 Pattern Count
Capitalize first and last letter of each word in a line
Print vertical sum of a binary tree
Print Boundary Sum of a Binary Tree
Reverse a single linked list
Greedy Strategy to solve major algorithm problems
Job sequencing problem
Root to leaf Path Sum
Exit Point in a Matrix
Find length of loop in a linked list
Toppers of Class
Print All Nodes that don't have Sibling
Transform to Sum Tree
Shortest Source to Destination Path

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