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Get all Loaded Beans in Spring Boot

  • Spring Boot

Spring boot loads lots of beans internally to run your application with minimal configuration. In this example, we will learn to find out all those spring boot loaded beans and their class…

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27 Essential IntelliJ Shortcuts to Boost Your Productivity

  • Java

Using keyboard shortcuts in Intellij IDEA can save you a lot of time, increase your productivity and help keep your wrists healthy. The most annoying thing you can use while…

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6 Books Java Developer Must Read

  • Java / Spring / Spring Boot

If you are a Java programmer and wondering what to read to improve your knowledge of Java and become a better Java developer, then you have come to the right place.…

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Find a Path in a Matrix (Java)

  • Code

Given a 2d matrix, find a path from the top left corner to the bottom right corner. Assume there exists at least one path, and you only need to find…

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Find K Pairs with Smallest Sums (Java)

  • Code

You are given two integer arrays nums1 and nums2 sorted in ascending order and an integer k. Define a pair (u,v) which consists of one element from the first array…

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Sparse Matrix Multiplication (Java)

  • Code

Given two sparse matrices A and B, return the result of AB. You may assume that A's column number is equal to B's row number. 1. Naive Method We can…

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Implement a Stack Using an Array in Java

  • Code

This post shows how to implement a stack by using an array. The requirements of the stack are: 1) the stack has a constructor which accepts a number to initialize…

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Implement a Queue using an Array in Java

  • Code

There following Java code shows how to implement a queue without using any extra data structures in Java. We can implement a queue by using an array. import java.lang.reflect.Array; import…

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Kth Smallest Element in a Sorted Matrix (Java)

  • Code

Given an n x n matrix where each of the rows and columns is sorted in ascending order, find the kth smallest element in the matrix. Note that it is…

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Best Meeting Point (Java)

  • Code

A group of two or more people wants to meet and minimize the total travel distance. You are given a 2D grid of values 0 or 1, where each 1…

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