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19 Given an array of positive integers arr, return the sum of all possible odd-length subarrays of arr

Amjad Saeed answered on April 2, 2023 Popularity 3/10 Helpfulness 2/10

answer 19 Given an array of positive integers arr, return the sum of all possible odd-length subarrays of arr

19 Given an array of positive integers arr, return the sum of all possible odd-length subarrays of arr

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function sumOddLengthSubarrays(arr) {
    let sum = 0;
    
    // Loop through each subarray length
    for (let len = 1; len <= arr.length; len += 2) {
      // Loop through each starting index of subarray
      for (let start = 0; start < arr.length; start++) {
        // Calculate ending index of subarray
        let end = start + len - 1;
        // If ending index is greater than the length of arr, break the loop
        if (end >= arr.length) break;
        // Loop through each element of subarray and add it to the sum
        for (let i = start; i <= end; i++) {
          sum += arr[i];
        }
      }
    }
    
    return sum;
  }

Popularity 3/10 Helpfulness 2/10 Language javascript

Source: Grepper

Tags: arr javascript return sum

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Contributed on Apr 02 2023

Amjad Saeed

0 Answers Avg Quality 2/10

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19 Given an array of positive integers arr, return the sum of all possible odd-length subarrays of arr

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