$ g++ Kadane.cpp $ a.out Enter the array length: 5 Enter the array: 1 -5 2 -1 3 The Max Sum is: 4 Enter the array length: 9 Enter the array: -2 1 -3 4 -1 2 1 -5 4 The Max Sum is: 6 ------------------ (program exited with code: 0) Press return to continue
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C++ Program to Implement Kadane?s Algorithm
C++ Program to Implement Kadane’s Algorithm
This is a C++ Program to Implement Kadane Algorithm. Kadane algorithm is to used to obtain the maximum subarray sum from an array of integers.
Here is source code of the C++ Program to Implement Kadane’s Algorithm. The C++ program is successfully compiled and run on a Linux system. The program output is also shown below.
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#include <iostream>
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#include <climits>
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using namespace std;
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#define MAX(X, Y) (X > Y) ? X : Y
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#define POS(X) (X > 0) ? X : 0
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int maxSum = INT_MIN;
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int N;
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int kadane(int* row, int len)
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{
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int x, sum, maxSum = INT_MIN;
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for (sum = POS(row[0]), x = 0; x < N; ++x, sum = POS(sum + row[x]))
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maxSum = MAX(sum, maxSum);
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return maxSum;
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}
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int main()
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{
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cout << "Enter the array length: ";
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cin >> N;
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int arr[N];
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cout << "Enter the array: ";
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for (int i = 0; i < N; i++)
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{
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cin >> arr[i];
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}
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cout << "The Max Sum is: "<<kadane(arr, N) << endl;
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return 0;
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}
Output:
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