If last character is 1 or 2 or 3 or 4 or 5 make it 0
else if ( c [ n - 1 ] == ' ' c [ n - 1 ] == ' ' c [ n - 1 ] == ' ' c [ n - 1 ] == ' ' c [ n - 1 ] == ' ' ) { c [ n - 1 ] = ' ' ; return c . join ( " " ) ; } else { c [ n - 1 ] = ' ' ;