Java Arrays Coding Practice Problems

Java Sorting and Searching Algorithms Coding Practice Problems

Last Updated : 04 Mar, 2025

Sorting and searching are essential techniques in Java programming, helping organize and retrieve data efficiently. Mastering these algorithms improves problem-solving skills, algorithmic efficiency, and coding performance in competitive programming and software development. This collection of Java sorting and searching practice problems covers fundamental sorting techniques like Bubble Sort, Merge Sort, and Binary Array Sorting, along with searching techniques like Binary Search.

These coding challenges will help you strengthen your logic, optimize your code, and prepare for technical interviews.

Java Sorting Algorithms Practice Questions

Java Searching Algorithms Practice Questions

Sorting Algorithms – Overview

Bubble Sort: A simple comparison-based sorting algorithm that repeatedly swaps adjacent elements if they are in the wrong order.
Merge Sort: A divide-and-conquer sorting algorithm that recursively divides the array into halves and merges them back in sorted order.
Binary Array Sorting: Sorting an array that contains only 0s and 1s using an optimal approach.
Count the Number of Possible Triangles: A sorting-based mathematical problem to find valid triangles from a given set of numbers.
The Thief Problem: A sorting-related problem that involves selecting optimal choices to maximize value, often linked with greedy algorithms.
Keep Indices After Sorting: A problem focused on maintaining original indices while sorting an array.

Searching Algorithms – Overview

Binary Search Method: A divide-and-conquer approach that searches for an element in a sorted array by repeatedly dividing the search space in half.
Binary Search on ArrayList: Implementing binary search specifically on Java's ArrayList using built-in or custom methods.

Mastering sorting and searching algorithms in Java improves coding efficiency, problem-solving skills, and interview readiness. Practicing these Java coding problems will help you optimize performance and tackle real-world challenges effectively.

Java Arrays Coding Practice Problems

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