Welcome to DrJava. Working directory is /Users/wayne/Workspace/CS112HWs/Fall.11/hw03 > run PolynomialCalculator Polynomial Reverse Polish Calculator [2 3] [p] Stack: 2x^3 [4 5] [p] Stack: 4x^5 2x^3 [+] [p] Stack: 4x^5 + 2x^3 [5 6 2 5 -2 3 4 1 234 0 + + +] [p] Stack: 2x^5 - 2x^3 + 4x + 234 5x^6 4x^5 + 2x^3 [+] [p] Stack: 5x^6 + 2x^5 - 2x^3 + 4x + 234 4x^5 + 2x^3 [+] [p] Stack: 5x^6 + 6x^5 + 4x + 234 [3 3] [5 2] [-] [p] Stack: 3x^3 - 5x^2 5x^6 + 6x^5 + 4x + 234 [*] [p] Stack: 15x^9 - 7x^8 - 30x^7 + 12x^4 + 682x^3 - 1170x^2 [q] Bye! >