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90. Find Subarray with Sum Equal to a Target Value
Objective: Given an array (nonnegative) and an integer, Find the Subarray whose sum equals the given integer.
Examples:
int[] arrA = { 25, 12, 14, 22, 19, 15, 10, 23 }; Integer = 55
Output
55 is found between indexes 2 and 4 And Elements are : 14 22 19
Approach :
Naive Approach: Use nested loops. Time Complexity  O(n^{2}).
Better Approach: Time Complexity  O(n)
 Iterate Through Array.
 Continuously add elements starting from index 0 to the currSum.
 While iterating through the array, check if currSum is greater than the target sum Sum.
 Adjust Current Sum: If currSum exceeds Sum, start reducing currSum by subtracting elements from the beginning of the array using the start index.
 While reducing currSum, check if it equals the target sum Sum. If it does, stop the iteration and return.
 Handle End of Array: If the loop finishes without finding a subarray with a sum equal to Sum, print a message indicating that no such subarray was found.
Output:
55 is found between indexes 2 and 4 And Elements are : 14 22 19