data structure and algorithm

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How to check if a given Tree is a Binary Search Tree in Java? Example Tutorial

July 28, 2022

Matrix

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Top 10 Matrix Coding Problems for Programming interviews

July 25, 2022

programming

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Java Program to Multiply Two Matrices - Matrix Multiplication Example

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Matrix

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[Solved] How to Count Negative Numbers in a Sorted Matrix? [Amazon Coding Interview Question]

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Coding problems

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How to Rotate an Array to Left or Right in Java? Example - LeetCode Solution

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pattern based exercise

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How to Print a left triangle star pattern in Java? Example Tutorial

July 19, 2022

programming

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How to Transpose a Matrix in Java? Example Tutorial

July 19, 2022

programming

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[Solved] How to Implement Fibonacci Series with Memoization in Java 8? ConcurrentHashMap Caching Example

July 18, 2022