private char[][] remplirTabChar(String k) {
		char[][] c= new char[5][5];
		String key=this.adapterCle(k).toString();
		ArrayList<Character> a=new ArrayList<Character>();
		int r=0;
		a.add(CHAR_INEXISTANT);
		a.add(' ');
		for(int i=0;i<key.length()-1;i++) {
			if(!a.contains(key.charAt(i))) {
				a.add(key.charAt(i));
				c[r/5][r%5]=key.charAt(i);
				r++;
			}
		}
		for(int j=0;j<ALPHABET.length();j++) {
			if(!a.contains(ALPHABET.charAt(j))) {
				a.add(ALPHABET.charAt(j));
				c[r/5][r%5]=ALPHABET.charAt(j);
				r++;
			}
		}
		return c;
	}