Merge pull request #44 from saurass/master

Largest Sum Contiguous Subarray in c++

Language/C++/LargestSumContiguousSubarray.cpp

@@ -0,0 +1,48 @@
+// C++ program to print largest contiguous array sum 
+
+#include<iostream> 
+#include<climits> 
+using namespace std; 
+
+int maxSubArraySum(int a[], int size) 
+{ 
+    int max_so_far = INT_MIN, max_ending_here = 0, 
+       start =0, end = 0, s=0; 
+
+    for (int i=0; i< size; i++ ) 
+    { 
+        max_ending_here += a[i]; 
+
+        if (max_so_far < max_ending_here) 
+        { 
+            max_so_far = max_ending_here; 
+            start = s; 
+            end = i; 
+        } 
+
+        if (max_ending_here < 0) 
+        { 
+            max_ending_here = 0; 
+            s = i + 1; 
+        } 
+    } 
+    cout << "Maximum contiguous sum is "
+        << max_so_far << endl; 
+    cout << "Starting index "<< start 
+        << endl << "Ending index "<< end << endl; 
+} 
+
+int main() 
+{ 
+    int n;
+    cout << "Enter number of elements in array \n";
+    cin >> n;
+
+    int a[n];
+    for(int i = 0; i < n; i++) {
+        cout << "Enter element " << i + 1 << " -\n";
+        cin >> a[i]; 
+    }
+    int max_sum = maxSubArraySum(a, n); 
+    return 0; 
+}