# Interview

- 21 October
### Difference between equals() and == in java

In this post, we will see about the difference between equals and == in java. This is most asked java interview question for fresher or 2-year experienced java developer and it might be confusing sometimes. Let’s try to understand each quickly. Equality operator “==” Equality operator can be used to compare primitives but when you […]

- 14 October
### Find peak element in the array

If you want to practice data structure and algorithm programs, you can go through 100+ data structure and algorithm programs. In this post, we will see how to find peak element in the array. Problem Given an array of integers. find the peak element in the array. Peak Element is the element of the array […]

- 27 September
### Print maximum occurring character in a String

In this post, we will see how to print the maximum occurring character in a String. Problem Print maximum occurring character in a String For example: String 1: java2blog tutorial Character: a has occurred maximum times in String: 3 ———————- String 2: This is test message Character: s has occurred maximum times in String: 5 […]

- 18 August
### Print all paths from top left to bottom right of MxN matrix

If you want to practice data structure and algorithm programs, you can go through Java coding interview questions. In this post, we will see how to print all paths from top left to bottom right of MxN matrix. Problem We need to print all paths from top left to bottom right of MxN matrix. You can either […]

- 18 August
### Print Numbers from 1 to N without using loop

If you want to practice data structure and algorithm programs, you can go through Java coding interview questions. In this post, we will see how to print numbers from 1 to N without using loop. Problem Print number from 1 to N without using any loop. N=10 Output: 1 2 3 4 5 6 7 8 […]

- 16 August
### Find all subsets of set (power set) in java

If you want to practice data structure and algorithm programs, you can go through Java coding interview questions. In this post, we will see how to find all subsets of set or power set in java. Problem Given a set of distinct integers, arr, return all possible subsets (the power set). For example: Input: nums = [1,2,3] Output: […]

- 13 August
### Permutations of array in java

If you want to practice data structure and algorithm programs, you can go through Java coding interview questions. In this post, we will see how to find all permutations of the array in java. Problem 1 Given array of distinct integers, print all permutations of the array. For example: array : [10, 20, 30] Permuations are : […]

- 13 August
### Count all paths from top left to bottom right of MxN matrix

If you want to practice data structure and algorithm programs, you can go through Java coding interview questions. In this post, we will see about how to count all paths from top left to bottom right of MxN matrix. Problem We need to count all paths from top left to bottom right of MxN matrix. You can […]

- 12 August
### Memoization example in java

If you want to practice data structure and algorithm programs, you can go through Java coding interview questions. In this tutorial, we will see about Memoization example in java. Let me start with the question. Would you like to do same task again and again when you know that it is going to give you same […]