There is also a nice way with Java 8 Streams: int[] subArr = IntStream.range(startInclusive, endExclusive) .map(i -> src[i]) .toArray(); The benefit about this is, it can be useful for many different types of "src" array and helps to improve writing pipeline operations on the stream.

Dec 9, 2024 · In Java, subarrays are the contiguous portion of an array. Extracting subarrays in Java is common when working with data that needs slicing or partitioning. Java does not have a direct method to create subarrays, we can extract subarrays using simple techniques like built-in methods or manual loops.

Dec 8, 2021 · We can use the Java Stream, introduced in Java SE 8, to get a subarray from an array. The idea is to get a stream of elements between the specified range and then call the toArray() method to accumulate the stream elements into a new array.

Feb 7, 2025 · Given an array arr [], the task is to generate all the possible subarrays of the given array. Examples: To generate a subarray, we need a starting index from the original array. For choosing the starting index, we can run a loop from [0 to n-1] and consider each i …

Jan 8, 2024 · The Arrays.copyOfRange() approach solves the problem by copying a part of the given array to a new array. When we want to copy a part from an array, apart from the Arrays.copyOfRange() method, we can also use the System.arraycopy() method.

Use copyOfRange method from java.util.Arrays class: int[] newArray = Arrays.copyOfRange(oldArray, startIndex, endIndex); startIndex is the initial index of the range to be copied, inclusive.

Jan 15, 2024 · A subarray is a contiguous part of array, i.e., Subarray is an array that is inside another array. In general, for an array of size n, there are n*(n+1)/2 non-empty subarrays. For example, Consider the array [1, 2, 3, 4], There are 10 non-empty sub-arrays.

Mar 4, 2025 · In this tutorial, we will explore various methods to create a subarray from another array in Java. We will discuss the syntax, provide clear examples, and explain each method in detail.

You could instantiate a new array and loop through the appropriate indices of the original array to initialize the subarray.

Learn how to create a subarray from another array in Java with this easy-to-follow guide.