Create combsort.cpp

Author: harshchan

Algorithms/Sorting/combsort.cpp

@@ -0,0 +1,118 @@
+// C++ implementation of Comb Sort
+
+//facebook,netflix
+
+#include<bits/stdc++.h>
+using namespace std;
+
+// To find gap between elements
+int getNextGap(int gap)
+{
+    // Shrink gap by Shrink factor
+    gap = (gap*10)/13;
+
+    if (gap < 1)
+        return 1;
+    return gap;
+}
+
+// Function to sort a[0..n-1] using Comb Sort
+void combSort(int a[], int n)
+{
+    // Initialize gap
+    int gap = n;
+
+    // Initialize swapped as true to make sure that loop runs
+    bool swapped = true;
+
+    // Keep running while gap is more than 1 and last iteration caused a swap
+    while (gap != 1 || swapped == true)
+    {
+        // Find next gap
+        gap = getNextGap(gap);
+
+        // Initialize swapped as false so that we can check if swap happened or not
+        swapped = false;
+
+        // Compare all elements with current gap
+        for (int i=0; i<n-gap; i++)
+        {
+            if (a[i] > a[i+gap])
+            {
+                swap(a[i], a[i+gap]);
+                swapped = true;
+            }
+        }
+    }
+}
+
+int main()
+{
+    int a[] = {8, 4, 1, 56, 3, -44, 23, -6, 28, 0};
+    int n = sizeof(a)/sizeof(a[0]);
+
+    combSort(a, n);
+
+    printf("Sorted array: \n");
+    for (int i=0; i<n; i++)
+        printf("%d ", a[i]);
+
+    return 0;
+}// C++ implementation of Comb Sort
+#include<bits/stdc++.h>
+using namespace std;
+
+// To find gap between elements
+int getNextGap(int gap)
+{
+    // Shrink gap by Shrink factor
+    gap = (gap*10)/13;
+
+    if (gap < 1)
+        return 1;
+    return gap;
+}
+
+// Function to sort a[0..n-1] using Comb Sort
+void combSort(int a[], int n)
+{
+    // Initialize gap
+    int gap = n;
+
+    // Initialize swapped as true to make sure that loop runs
+    bool swapped = true;
+
+    // Keep running while gap is more than 1 and last iteration caused a swap
+    while (gap != 1 || swapped == true)
+    {
+        // Find next gap
+        gap = getNextGap(gap);
+
+        // Initialize swapped as false so that we can check if swap happened or not
+        swapped = false;
+
+        // Compare all elements with current gap
+        for (int i=0; i<n-gap; i++)
+        {
+            if (a[i] > a[i+gap])
+            {
+                swap(a[i], a[i+gap]);
+                swapped = true;
+            }
+        }
+    }
+}
+
+int main()
+{
+    int a[] = {8, 4, 1, 56, 3, -44, 23, -6, 28, 0};
+    int n = sizeof(a)/sizeof(a[0]);
+
+    combSort(a, n);
+
+    printf("Sorted array: \n");
+    for (int i=0; i<n; i++)
+        printf("%d ", a[i]);
+
+    return 0;
+}