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♥ ♦ Java coding practice problems – prime and powerful

There is no other way to pass the Java coding tests other than practicing. I have failed Java coding tests due to lack of practice. How often do you get work with tree and graph data structures? Ho often do you work with algorithms? 50+ Java coding practice problems Links:

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Posted in Algorithms, Can you write code?
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♦ Splitting input text & string processing coding Q&A

Q1. Can you write code to extract numbers from a given input text and return the sum of those numbers? Example: “1 some text 2 more text 4 more text 8” should return 15 as the sum. A The key steps are: 1. Split the given input into tokens. Split…...

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Posted in Algorithms, Can you write code?, member-paid

♦ Tree traversal algorithms in Java

Q1. What are the different binary tree traversal mechanisms? A1. Traversing a tree means visiting all the nodes of a tree in order. Many different binary tree algorithms involve traversals. For example, if you wish to count the number of employees in an organizational chart you must visit each node.…...

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Posted in Algorithms, member-paid, Tree structure

Searching algorithms in Java

This assumes that you understand “Swapping, partitioning, and sorting algorithms in Java“. Q1. Can you write a code to search for number 5 in 7 3 6 8 2 9 5 4? A1. The code below uses the linear search algorithm. The linear search algorithm’s two advantages are simplicity and…...

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Posted in Algorithms, member-paid

Swapping, partitioning, and sorting algorithms in Java

Q1. Can you write an algorithm in Java to swap two variables? A1.

Q2. Can you write an algorithm to bubble sort the following array { 30, 12, 18, 0, -5, 72, 424 }?? A2.

Q3. Is there a more efficient sorting algorithm than a bubble sort algorithm?…...

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Posted in Algorithms, member-paid, Sorting Algorithms

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