add program to sort numbers

sorting.cpp

+#include "sorting.h"
+#include <iostream>
+#include <vector>
+using namespace std;
+
+
+vector<int> sort_custom( vector<int> a )
+{
+	for(int i=0;i<a.size();i++)
+	{
+		int flag=0;
+		for(int j=1;j<a.size();j++)
+		{
+			if(a[j]<a[j-1])
+			{
+				flag=1;
+				int temp=a[j];
+				a[j]=a[j-1];
+				a[j-1]=temp;
+			}
+		}
+		if(flag==0)
+			break;
+	}	
+	return a;
+}