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In this post, you will find the solution for **Subarray Division** **in Java-HackerRank Problem**. We are providing the **correct and tested solutions** of coding problems present on **HackerRank**. If you are not able to solve any problem, then you can take help from our Blog/website.

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**Introduction To Algorithm**

The word **Algorithm** means “a process or set of rules to be followed in calculations or other problem-solving operations”. Therefore Algorithm refers to a set of rules/instructions that step-by-step define how a work is to be executed upon in order to get the expected results.

**Advantages of Algorithms:**

- It is easy to understand.
- Algorithm is a step-wise representation of a solution to a given problem.
- In Algorithm the problem is broken down into smaller pieces or steps hence, it is easier for the programmer to convert it into an actual program.

** Link for the Problem** – Subarray Division – Hacker Rank Solution

Subarray Division – Hacker Rank Solution

**Problem:**

Two children, Lily and Ron, want to share a chocolate bar. Each of the squares has an integer on it.

Lily decides to share a contiguous segment of the bar selected such that:

- The length of the segment matches Ron’s birth month, and,
- The sum of the integers on the squares is equal to his birth day.

Determine how many ways she can divide the chocolate.

**Example**

Lily wants to find segments summing to Ron’s birth day, with a length equalling his birth month, . In this case, there are two segments meeting her criteria: and .

**Function Description**

Complete the *birthday* function in the editor below.

birthday has the following parameter(s):

*int s[n]:*the numbers on each of the squares of chocolate*int d:*Ron’s birth day*int m:*Ron’s birth month

**Returns**

*int:*the number of ways the bar can be divided

**Input Format**

The first line contains an integer , the number of squares in the chocolate bar.

The second line contains space-separated integers , the numbers on the chocolate squares where .

The third line contains two space-separated integers, and , Ron’s birth day and his birth month.

**Constraints**

- , where ()

**Sample Input 0**

5 1 2 1 3 2 3 2

**Sample Output 0**

2

**Explanation 0**

Lily wants to give Ron squares summing to . The following two segments meet the criteria:

**Sample Input 1**

6 1 1 1 1 1 1 3 2

**Sample Output 1**

0

**Explanation 1**

Lily only wants to give Ron consecutive squares of chocolate whose integers sum to . There are no possible pieces satisfying these constraints:

Thus, we print as our answer.

**Sample Input 2**

1 4 4 1

**Sample Output 2**

1

**Explanation 2**

Lily only wants to give Ron square of chocolate with an integer value of . Because the only square of chocolate in the bar satisfies this constraint, we print as our answer.

Subarray Division – Hacker Rank Solution

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