Create inserationSort.cpp

Sorting/Cpp/inserationSort.cpp

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+// C++ program for insertion sort
+
+#include <bits/stdc++.h>
+using namespace std;
+
+// Function to sort an array using
+// insertion sort
+void insertionSort(int arr[], int n)
+{
+ int i, key, j;
+ for (i = 1; i < n; i++)
+ {
+ key = arr[i];
+ j = i - 1;
+
+ // Move elements of arr[0..i-1],
+ // that are greater than key, to one
+ // position ahead of their
+ // current position
+ while (j >= 0 && arr[j] > key)
+ {
+ arr[j + 1] = arr[j];
+ j = j - 1;
+ }
+ arr[j + 1] = key;
+ }
+}
+
+// A utility function to print an array
+// of size n
+void printArray(int arr[], int n)
+{
+ int i;
+ for (i = 0; i < n; i++)
+ cout << arr[i] << " ";
+ cout << endl;
+}
+
+// Driver code
+int main()
+{
+ int arr[] = { 12, 11, 13, 5, 6 };
+ int N = sizeof(arr) / sizeof(arr[0]);
+
+ insertionSort(arr, N);
+ printArray(arr, N);
+
+ return 0;
+}