How do you find the sum of Subarray?
Algorithm:
- Traverse the array from start to end.
- From every index start another loop from i to the end of array to get all subarray starting from i, keep a variable sum to calculate the sum.
- For every index in inner loop update sum = sum + array[j]
- If the sum is equal to the given sum then print the subarray.
Is equal to k?
The Coulomb constant, the electric force constant, or the electrostatic constant (denoted ke, k or K) is a proportionality constant in electrostatics equations. In SI units it is equal to 8.9875517923(14)×109 kg⋅m3⋅s−2⋅C−2.
What is a contiguous subarray?
This is just the ordinary dictionary definition of “contiguous”: all adjacent in space. A subarray is defined by any subset of the indices of the original array; a contiguous subarray is defined by an interval of the indices: a first and last element and everything between them.
What is maximum Subarray sum problem?
The maximum subarray problem is a task to find the series of contiguous elements with the maximum sum in any given array.
How to find number of subarrays having sum exactly equal to K-geeksforgeeks?
From the map find the number of subarrays previously found having sum equal to currsum-sum. Excluding all those subarrays from the current subarray, gives new subarrays having the desired sum. So increase count by the number of such subarrays.
How to calculate the sum of all elements in an array?
We use a cumulative sum array sum [] wherein sum [i] stores sum of all array elements until index (i-1). Then, in order to calculate the sum of elements lying between two indices (i and j), we can subtract the cumulative sum (sum [i] – sum [j-1]) corresponding to the two indices to obtain the sum directly.
What to do when sum of elements is equal to K?
While iterating in the inner loop find sum of elements up to each value of end. While iterating in the inner loop, if value of sum becomes equal to given k,increment the value of count. For the next iteration reassign sum as 0.