Coding Problems

Check if a number is positive, negative or zero

Print multiplication table for a given number

Print all numbers from 1 to 100

Swap two variables without using a third variable

Calculate the square of a number

Check if a number reads the same forwards and backwards

Print a number pattern where each number repeats equal to its value

Check if a number is an Armstrong number

Find the missing number in a given array of integers from 1 to n

Check if a string of parentheses is valid

Find all divisors of a number

Count the number of digits in a string

Check if two strings are anagrams (case insensitive)

Calculate the power of a number

Find the first missing character in a string

Check if a number is a perfect number

Find all prime numbers in a given range

Find the second largest number in a list

Count the number of consonants in a string

Find the missing number in a sequence from 1 to n