(0, A, A, S, halt) (0, a, X, R, 1) (0, Y, Y, R, 3) accept A mark a with X no more a's (2, a, a, L, 2) Scan back left looking for X: X not found yet (2, Y, Y, L, 2) X not found yet (2, X, X, R, 0) X found, turn around Scan right looking for b to pair with a: (1, a, a, R, 1) b not found yet Scan right looking for A and halt: (1, Y, Y, R, 1) b not found yet (3, Y, Y, R, 3) (1, b, Y, L, 2) mark b with Y (3, A, A, S, halt) This TM does not accept the string aaabb. Why? Put your reason in the following box. You cannot simply say the number of a's is not the same as the number of b's. The TM cannot tell if the number of a's is not the same as the number of b's. It would reject a string only if it reaches a point that it cannot proceed any further and the state is not the ‘halt' state.
(0, A, A, S, halt) (0, a, X, R, 1) (0, Y, Y, R, 3) accept A mark a with X no more a's (2, a, a, L, 2) Scan back left looking for X: X not found yet (2, Y, Y, L, 2) X not found yet (2, X, X, R, 0) X found, turn around Scan right looking for b to pair with a: (1, a, a, R, 1) b not found yet Scan right looking for A and halt: (1, Y, Y, R, 1) b not found yet (3, Y, Y, R, 3) (1, b, Y, L, 2) mark b with Y (3, A, A, S, halt) This TM does not accept the string aaabb. Why? Put your reason in the following box. You cannot simply say the number of a's is not the same as the number of b's. The TM cannot tell if the number of a's is not the same as the number of b's. It would reject a string only if it reaches a point that it cannot proceed any further and the state is not the ‘halt' state.
C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN:9781337102087
Author:D. S. Malik
Publisher:D. S. Malik
Chapter5: Control Structures Ii (repetition)
Section: Chapter Questions
Problem 10PE: Redo Programming Exercise 8 using dowhile loops.
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