8. People weave thread into cloth, straw into hats, and reeds into baskets. a. cross b. knit c. net d. fold 9.In some libraries young people can check out ten juvenile books at one time. a. adventure b. hardcover c. adolescent d. large-print 10.He w
Paul的第二次作业,Use higher-order functions such as map and fold (or adaptations thereof for relevant structures) rather than explicit recursion.也就是用自己针对Pathtree进行fold定义,然后利用fold来替换递归.这个是这次作业的重点.占了三分之一的得分比例.
