Best answer: What is a Subarray in Java?

How do you create a Subarray?

Approach: We use two pointers start and end to maintain the starting and ending point of the array and follow the steps given below:

  1. Stop if we have reached the end of the array.
  2. Increment the end index if start has become greater than end.
  3. Print the subarray from index start to end and increment the starting index.

How do you find a subarray in an array?


  1. Traverse the array from start to end.
  2. From every index start another loop from i to the end of array to get all subarray starting from i, keep a variable sum to calculate the sum.
  3. For every index in inner loop update sum = sum + array[j]
  4. If the sum is equal to the given sum then print the subarray.

What is kadane algorithm?

Kadane’s algorithm is an iterative dynamic programming algorithm in which we search for a maximum sum contiguous subarray within a one-dimensional numeric array.

What is subsegment of array?

An array containing elements is given. Find number of distinct contiguous subsegments of length , each containing at least different elements. If you sort any two segments of length , and a i = b i , 1 ≤ i ≤ l , then both the segments are considered to be same, and is counted only once.

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How do I generate Subarrays in size k?

Sum of all subarrays of size K

  1. Input: arr[] = {1, 2, 3, 4, 5, 6}, K = 3.
  2. Output: 6 9 12 15.
  3. Explanation: All subarrays of size k and their sum: Subarray 1: {1, 2, 3} = 1 + 2 + 3 = 6. Subarray 2: {2, 3, 4} = 2 + 3 + 4 = 9. Subarray 3: {3, 4, 5} = 3 + 4 + 5 = 12. Subarray 4: {4, 5, 6} = 4 + 5 + 6 = 15.

How do I check if one array is Subarray of another?

Simple Approach: A simple approach is to run two nested loops and generate all subarrays of the array A[] and use one more loop to check if any of the subarray of A[] is equal to the array B[]. Efficient Approach : An efficient approach is to use two pointers to traverse both the array simultaneously.

How many Subarrays are in an array?

Any number of elements smaller than L can be included in subarray as long as there is at least one single element between L and R inclusive. The number of all possible subarrays of an array of size N is N * (N + 1)/2.

What is substring with example?

Java String substring() Method example.

The substring(int beginIndex, int endIndex) method of the String class. … The substring begins at the specified beginIndex and extends to the character at index endIndex – 1. Thus the length of the substring is endIndex-beginIndex.

Is CharSequence a string?

Strings are CharSequences, so you can just use Strings and not worry. Android is merely trying to be helpful by allowing you to also specify other CharSequence objects, like StringBuffers.

Can a substring be a subsequence?

A substring of a string is a prefix of a suffix of the string, and equivalently a suffix of a prefix. If one string is a substring of another, it is also a subsequence, which is a more general concept.

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