作者fbiwbi (fbiwbi)
看板TransCSI
標題[問題]師大95資工
時間Mon Jun 18 19:44:28 2007
2.the infix form of the postfix expression (AB+CD+/A*B+)is
a.(A+B)*(C+D)/(A+B)
b.B+(A+B)/(C+D)*A
c.(A+B)/(C+D)*(A+B)
d.B+((A+B)/(C+D)*A)
這提稿不懂b跟d有啥差別..不知這兩個要選哪個
5.if X,Y,Z are integer set variables then the expression whose value is the
set of integers in exactly one of the three sets is
a.X*Y*Z
b.X+Y+Z
c.X+Y-Z-Y+Z
d.X+Y+Z*X*Y*Z
這提是再問複雜度嗎??
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推 abien:2."postfix" 5是b嗎? 06/18 20:27
推 biox:題目要後序轉中序 我覺得b d都可以 06/18 22:20
推 abien:b.AB+CD+/A*B+ d.AB+CD+/A*B+ ~"~ 06/18 22:56
推 antirazin:我想應該不是問複雜度,而是單純的集合問題 06/18 23:01
→ antirazin:它要你將X、Y、Z這三個整數集合變數用下列4個其中一個 06/18 23:02
→ antirazin:來涵蓋上面三個,那就是XYZ取聯集,所以應該是b 06/18 23:03