Given an array of non-duplicating numbers from 1 to n where one number is missing, find it.

What are the differences between constructor and method of a class in Java?

How would you differentiate between a String, StringBuffer, and a StringBuilder?

Briefly explain the concept of constructor overloading.

How to find if a string is present in a text file?

How to Shuffle an Array in Java?

Java program to check if the given number is Prime?

How to reverse a String in Java?

How do I write a program in C++ to find the perfect numbers between 1 and 500?

What does "atomic" mean in programming?

What is the difference between JDK and JRE?

How can I write a C code for a (2D) array?