Tutorials, Errors and Exceptions

Its a journey to understand things better. It will have tutorials, any error/exceptions encountered, its resolutions and lots of learning.

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Nov 30, 20212 min read

#LC1481 - Find Least Number of Unique Integers After K Removals

In this post, we will look into one of the Leetcode problem #1481, where we have to find the least number of unique integers after...

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Nov 29, 20212 min read

#LC983 - Find The Minimum Cost For Tickets (DP)

In this post we will go through the Leetcode #983 to find the minimum cost for Tickets, which could be one of the starting practice...

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Nov 28, 20213 min read

Read/Write Excel Using Apache POI & Java

This post will explore Apache POI library which is used to read any excel document and can also edit the excel sheets. Apache POI (Poor...

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Nov 27, 20212 min read

#LC226 - Inversion Of Binary Tree Using Recursion

Following the last post on the binary tree traversals, in this post we will try to invert a given binary tree. Binary tree is a data...

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Nov 26, 20214 min read

#LC105 - Binary Tree from In-Order and Pre-Order Traversal

In this post we will create a binary tree from the given in-order and pre-order traversal. You can find the details on the question here...

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Nov 24, 20212 min read

#LC746 - Minimum Cost Of Climbing Stairs

In this post we will look into the the leetcode #746 problem to find the minimum cost of climbing stairs. This is also a good example to...

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Nov 24, 20212 min read

Using Twilio for Sending WhatsApp Message in Java

In this blog post, we will try to send WhatsApp message in Java using Twilio account. Prerequisite: Create a free account in Twilio. Once...

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