Day $4$ assignments

Number Checker

Write a program that let the user enter a number and checks if a given number is prime, is even, is Palindrome, and find it's factorial

Example:

input $5$

output: prime: yes,

even:no$,$

palindrome: yes

factorial: $120$

Fibonacci Sequence

Implement a program that prints the first N numbers in the Fibonacci sequence.

Example: Input: $5$ Output: $0,1,1,2,3$

Count Vowels in a String

Write a program that counts the number of vowels $(a,e,i,o,u)$ in a given string.

Example: Input: "hello" Output: $2$

Reverse a String

Create a program that takes a string and returns it in reverse order.

Example: Input: "hello" Output: "olleh"

Sum of Primes

Implement a program that calculates the sum of all prime numbers less than a given number.

Example: Input: $10$ Output: $17(2+3+5+7)$

Matrix Multiplication

Write a program to multiply two matrices and display the result.

Example: Given two $22$ matrices, multiply them and show the resultant matrix.

Unique Elements in Array

Create a program that takes an array of integers and returns an array of unique elements.

Example: Input: $[1,2,2,3,4,4,5]$ Output: $[1,2,3,4,5]$

Rotate Array

Write a program that rotates an array to the right by a given number of positions.

Example: Input: $[1,2,3,4,5],$ Positions: $2$ Output: $4,5,1,2,3$

Using C#

Do it with hand writen no use for chatgtp and bard $,$cleen code