Package g1501_1600.s1588_sum_of_all_odd_length_subarrays

Class Solution

java.lang.Object

g1501_1600.s1588_sum_of_all_odd_length_subarrays.Solution

public class Solution
extends Object

1588 - Sum of All Odd Length Subarrays\. Easy Given an array of positive integers `arr`, calculate the sum of all possible odd-length subarrays. A subarray is a contiguous subsequence of the array. Return _the sum of all odd-length subarrays of _`arr`. **Example 1:** **Input:** arr = [1,4,2,5,3] **Output:** 58 **Explanation:** The odd-length subarrays of arr and their sums are: [1] = 1 [4] = 4 [2] = 2 [5] = 5 [3] = 3 [1,4,2] = 7 [4,2,5] = 11 [2,5,3] = 10 [1,4,2,5,3] = 15 If we add all these together we get 1 + 4 + 2 + 5 + 3 + 7 + 11 + 10 + 15 = 58 **Example 2:** **Input:** arr = [1,2] **Output:** 3 **Explanation:** There are only 2 subarrays of odd length, [1] and [2]. Their sum is 3. **Example 3:** **Input:** arr = [10,11,12] **Output:** 66 **Constraints:** * `1 <= arr.length <= 100` * `1 <= arr[i] <= 1000`

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
int	sumOddLengthSubarrays(int[] arr)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Solution

public Solution()

Method Details

sumOddLengthSubarrays

public int sumOddLengthSubarrays(int[] arr)