Adding Selection sort and iterative binary search.

Binary Search/iterative binary search.c

@@ -0,0 +1,59 @@
+#include <stdio.h>
+int iterative_binary(int array[], int start, int end, int search);
+int main()
+{
+    int array[50], n, i, s;
+    int idx;
+    printf("How many elements do you want to enter? ");
+    scanf("%d",&n);
+
+    printf("Enter %d elements:\n",n);
+    for(i=0;i<n;i++)
+    {
+        scanf("\t%d",&array[i]);
+    }
+
+    printf("Enter the element to search: ");
+    scanf("%d",&s);
+
+    idx = iterative_binary(array, 0, n-1, s);
+    if(idx == NULL)
+    {
+        printf("Element is not present in the array.\n");
+    }
+    else
+    {
+        printf("The element occurs in index: %d\n",idx);
+    }
+    return 0;
+}
+
+int iterative_binary(int array[], int start, int end, int search)
+{
+   while (start <= end)
+   {
+      int mid = start + (end - start)/2;
+      printf("Middle element: %d\n",mid);
+      if (array[mid] == search)
+         return mid;
+      if (array[mid] < search)
+         start = mid + 1;
+      else
+         end = mid - 1;
+   }
+   return;
+}
+
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+

Sorting/selection-sort.cpp

@@ -0,0 +1,45 @@
+#include<iostream>
+using namespace std;
+void swapping(int &a, int &b)
+{        
+   int temp;
+   temp = a;
+   a = b;
+   b = temp;
+}
+void display(int *array, int size) 
+{
+   for(int i = 0; i<size; i++)
+      cout << array[i] << " ";
+   cout << endl;
+}
+void selectionSort(int *array, int size) 
+{
+   int i, j, imin;
+   for(i = 0; i<size-1; i++)
+   {
+      imin = i;   //get index of minimum data
+      for(j = i+1; j<size; 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];           
+   cout << "Enter elements:" << endl;
+   for(int i = 0; i<n; i++) 
+   {
+      cin >> arr[i];
+   }
+   cout << "Array before Sorting: ";
+   display(arr, n);
+   selectionSort(arr, n);
+   cout << "Array after Sorting: ";
+   display(arr, n);
+}