a:0110;b:10;c:0111;d:1111;e:110;f:00;g:1110;h:010.WPL=2*0.24+3*0.1+4*0.03+4*0.06+4*0.07+4*0.08+3*0.14+2*0.28=2.72注:树传不上来,你可以根据编码自己画,谢谢!