using System;

namespace TableauxParam
{
	class MainClass
	{
		/**************************************************/

		public static int somme(int[] T)
		{
			int somme = 0; 
			foreach(int k in T)
				somme += k;
			return somme;
		}
		
		/**************************************************/
		
		public static int min(int[] T)
		{
			int min = T[0];
			foreach (int k in T)
				if(k < min)
					min = k;
			return min;
		}
		
		/**************************************************/
		
		public static bool existe(int[] T, int k)
		{
			foreach(int v in T)
				if (v == k)
					return true;
			return false;
		}
		
		/**************************************************/

		public static bool estPair(int n)
		{
			return n%2 == 0;
		}
		
		public static int sommePairs(int[] T)
		{
			int somme = 0;
			foreach(int v in T)
				if (estPair(v))
					somme += v;
			return somme;
		}
		/**************************************************/

		public static bool estTrie(int[] T)
		{
			int n = T.Length;
			for (int i = 1 ; i < n ; i++)
				if (T[i - 1] > T[i])
					return false;
			return true;
		}
			
		/**************************************************/
		
		public static void permutation(int[] T)
		{
			int n = T.Length;
			int temp = T[n - 1];
			for (int i = n - 1 ; i > 0 ; i--)
				T[i] = T[i - 1];
			T[0] = temp;
		}

		/**************************************************/
		
		public static void echange(int[] T, int i, int j)
		{
				int temp = T[i];
				T[i] = T[j];
				T[j] = temp;		
		}
		
		public static void miroir(int[] T)
		{
			int n = T.Length;
			int i = 0, j = n-1;
			while(i < j)
			{
				echange(T, i, j);
				i++;
				j--;
			}		
		}
		
		/**************************************************/
		
		public static string StringOfTab(int [] t)
		{
			string res = "";
			foreach(int v in t)
				res += v + " ";
			return res;
		}
		
		public static int[] entiersCroissants(int n)
		{
			int [] t = new int[n];
			for (int i = 0 ; i < n ; i++ )
				t[i] = i + 1;
			return t;
		}
		
		public static void Main (string[] args)
		{
			int [] t = entiersCroissants(7);
			Console.WriteLine("tab = " + StringOfTab(t));
			Console.WriteLine("somme = " + somme(t));
			Console.WriteLine("min = " + min(t));
			Console.WriteLine("existe 7 = " + existe(t, 7));
			Console.WriteLine("somme pairs = " + sommePairs(t));
			Console.WriteLine("estTrié = " + estTrie(t));
			permutation(t);
			Console.WriteLine("permutation = " + StringOfTab(t));
			miroir(t);
			Console.WriteLine("miroir = " + StringOfTab(t));
		}
	}
}