Added selection and insertion sort programs in c++

Author: lakshyajit165

C++/InsertionSort.cpp

@@ -0,0 +1,34 @@
+#include<iostream>
+using namespace std;
+void display(int *array, int n) {
+   for(int i = 0; i<n; i++)
+      cout << array[i] << " ";
+   cout << endl;
+}
+void insertionSort(int *array, int n) {
+   int key, j;
+   for(int i = 1; i<n; i++) {
+      key = array[i];//take value
+      j = i;
+      while(j > 0 && array[j-1]>key) {
+         array[j] = array[j-1];
+         j--;
+      }
+      array[j] = key;   //insert in right place
+   }
+}
+int main() {
+   int n;
+   cout << "Enter the number of elements: ";
+   cin >> n;
+   int arr[n];    //create an array with given number of elements
+   cout << "Enter elements:" << endl;
+   for(int i = 0; i<n; i++) {
+      cin >> arr[i];
+   }
+   cout << "Array before Sorting: ";
+   display(arr, n);
+   insertionSort(arr, n);
+   cout << "Array after Sorting: ";
+   display(arr, n);
+}

C++/SelctionSort.cpp

@@ -0,0 +1,38 @@
+#include<iostream>
+using namespace std;
+void swapping(int &a, int &b) {         //swap the content of a and b
+   int temp;
+   temp = a;
+   a = b;
+   b = temp;
+}
+void display(int *array, int n) {
+   for(int i = 0; i<n; i++)
+      cout << array[i] << " ";
+   cout << endl;
+}
+void selectionSort(int *array, int n) {
+   int i, j, imin;
+   for(i = 0; i<n-1; i++) {
+      imin = i;   //get index of minimum data
+      for(j = i+1; j<n; j++)
+         if(array[j] < array[imin])
+            imin = j;
+         //placing in correct position
+         swap(array[i], array[imin]);
+   }
+}
+int main() {
+   int n;
+   cout << "Enter the number of elements: ";
+   cin >> n;
+   int arr[n];           //create an array with given number of elements
+   cout << "Enter elements:" << endl;
+   for(int i = 0; i<n; i++) {
+      cin >> arr[i];
+   }
+  
+   selectionSort(arr, n);
+   cout << "Array after Sorting: ";
+   display(arr, n);
+}