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Sum of All Elements in a Jagged Array

Certification: Basic Level Accuracy: 100% Submissions: 2 Points: 8

Write a C# program to find the sum of all elements in a jagged array. A jagged array is an array whose elements are arrays of different lengths. The elements inside the nested arrays are integers, and you need to calculate the sum of all these integers.

Implement the CalculateJaggedArraySum(int[][] jaggedArray) function which:

  1. Takes a jagged array of integers as input
  2. Returns the sum of all integers in the jagged array
Example 1
    

  • Input: jaggedArray = [[1, 2, 3], [4, 5], [6]]
    • 

  • Output: 21
    • 

  • Explanation: 
      
    
    • Sum = 1 + 2 + 3 + 4 + 5 + 6 = 21
      • 
  
    •
Example 2
    

  • Input: jaggedArray = [[10, 20], [30, 40, 50]]
    • 

  • Output: 150
    • 

  • Explanation: 
      
    
    • Sum = 10 + 20 + 30 + 40 + 50 = 150
      • 
  
    •
Constraints
    

  • 0 <= jaggedArray.Length <= 100
    • 

  • 0 <= jaggedArray[i].Length <= 100
    • 

  • -10,000 <= jaggedArray[i][j] <= 10,000
    • 

  • Time Complexity: O(n) where n is the total number of elements across all arrays
    • 

  • Space Complexity: O(1)
    •
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Hint
Solution

Solution Hints

    
  
  • Use nested loops to iterate through the jagged array
    • 
  
  • Outer loop iterates through the main array
    • 
  
  • Inner loop iterates through each sub-array
    • 
  
  • Keep a running sum of all encountered elements
    • 
  
  • Handle null arrays or empty arrays appropriately
    •

Steps to solve by this approach:

 Step 1: Check if the input jagged array is null; if so, return 0
 Step 2: Initialize a variable to keep track of the running sum
 Step 3: Use an outer loop to iterate through each sub-array in the jagged array
 Step 4: For each sub-array, check if it's null; if so, skip it
 Step 5: Use an inner loop to iterate through each element in the current sub-array
 Step 6: Add each element to the running sum and return the final result

Submitted Code :