Stacks on Data Structure and Algorithms related Questions and Answers

Question :   If -*+abcd = 11, find a, b, c, d using evaluation of prefix algorithm. 1. a=2, b=3, c=5, d=4 2. a=1, b=2, c=5, d=4 3. a=5, b=4, c=7,d=5 4. a=1, b=2, c=3, d=4 Answer :   2 - a=1, b=2, c=5, d=4