Loop Programs
Programs using loops (for, while, do-while)
14 program solutions
Program Solutions
Multiplication Table
Program to print multiplication table of a number
Sum of n Natural Numbers
Program to calculate sum of first n natural numbers
Factorial of a Number
Program to calculate factorial of a number
Reverse a Number
Program to reverse the digits of a number
GCD of Two Numbers
Program to find Greatest Common Divisor using Euclidean algorithm
LCM of Two Numbers
Program to find Least Common Multiple of two numbers
Palindrome Check
Program to check if a number is palindrome
Prime Check
Program to check if a number is prime
Primes in Range
Program to find all prime numbers in a given range
Armstrong Number
Program to check if a number is an Armstrong number
nth Fibonacci Number
Program to find the nth Fibonacci number
Calculate the Power of a Number
Program to calculate base raised to the power of exponent
Factors of a Natural Number
Program to find all factors of a number
Basic Calculator
Program to create a basic calculator with arithmetic operations
Topic Strategy: Loop Programs
This topic is best practiced through repetition with variation. Solve each program, then modify constraints and test alternate approaches so you understand why one solution performs better than another.
During interviews, explain the approach before coding: input assumptions, core logic, complexity, and edge cases. Clear reasoning often matters as much as final code correctness.
Once comfortable, time-box each question and target clean, readable code with meaningful variable names and a quick dry run explanation.