Go Hindi | Count Pairs of Contiguous Elements Equal to a Given Value
This program counts how many times the sum of pairs of contiguous elements in an array is equal to a given value
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k. Additionally, it appends a zero to the end of the array to ensure all possible pairs are considered, including pairs that involve the last element.
Details:
Input Array: The program starts with an array arr containing integer elements. In this example, the initial array is arr = [1, 1, 1].
Given Value: The integer k = 2 is the target value that the sum of pairs should match.
Appending Zero: The program appends a zero to the array to handle the edge case involving the last element.
Pairwise Sum Calculation: The program iterates through the array, summing each element with its next contiguous element.
Count Matches: It counts how many times the sum of these pairs equals the given value k.
Example:
For the array arr = [1, 1, 1] and k = 2:
Check pairs (1, 1), (1, 1), and (1, 0):
Pair (1, 1) has a sum of 2, which matches k. (True)
Pair (1, 1) has a sum of 2, which matches k. (True)
Pair (1, 0) has a sum of 1, which does not match k. (False)
The program prints the count of matching pairs.