solves sum of all odd length sub arrays

Author: anishLearnsToCode

README.md

@@ -395,4 +395,5 @@
 | 1566 | [Detect Pattern of Length M Repeated K or More Times](https://leetcode.com/problems/detect-pattern-of-length-m-repeated-k-or-more-times)             |                                                   [![Java](assets/java.png)](src/DetectPatternOfLengthMRepeatedKOrMoreTimes.java)                                                    |                                                                                                                                   |
 | 1572 | [Matrix Diagonal Sum](https://leetcode.com/problems/matrix-diagonal-sum)                                                                             |                                                                [![Java](assets/java.png)](src/MatrixDiagonalSum.java)                                                                |                                                                                                                                   |
 | 1576 | [Replace All ?'s to Avoid Consecutive Repeating Characters](https://leetcode.com/problems/replace-all-s-to-avoid-consecutive-repeating-characters)   |                                                 [![Java](assets/java.png)](src/ReplaceAllToAvoidConsecutiveRepeatingCharacters.java)                                                 |                                                                                                                                   |
-| 1582 | [Special Positions in a Binary Matrix](https://leetcode.com/problems/special-positions-in-a-binary-matrix)                                           |                                                 [![Java](assets/java.png)](src/SpecialPositionInABinaryMatrix.java)                                                 |                                                                                                                                   |
+| 1582 | [Special Positions in a Binary Matrix](https://leetcode.com/problems/special-positions-in-a-binary-matrix)                                           |                                                         [![Java](assets/java.png)](src/SpecialPositionInABinaryMatrix.java)                                                          |                                                                                                                                   |
+| 1588 | [Sum of All Odd Length Subarrays](https://leetcode.com/problems/sum-of-all-odd-length-subarrays)                                                     |                                                           [![Java](assets/java.png)](src/SumOfAllOddLengthSubArrays.java)                                                            |                                                                                                                                   |

src/SumOfAllOddLengthSubArrays.java

@@ -0,0 +1,9 @@
+public class SumOfAllOddLengthSubArrays {
+    public int sumOddLengthSubarrays(int[] array) {
+        int sum = 0;
+        for (int index = 0 ; index < array.length ; index++) {
+            sum += (((array.length - index) * (index + 1) + 1) / 2) * array[index];
+        }
+        return sum;
+    }
+}