text: k represents the number of characters that are already stored in the c [ ]
code: if ( len & 1 ) : NEW_LINE INDENT k = 1 NEW_LINE DEDENT else : NEW_LINE INDENT k = 2 NEW_LINE DEDENT for i in range ( k , len , 2 ) : NEW_LINE INDENT c [ med - pos ] = str [ i ] NEW_LINE DEDENT