24 24 votes Which one of the following kinds of derivation is used by LR parsers?LeftmostLeftmost in reverseRightmostRightmost in reverse Compiler Design gatecse-2019 compiler-design parsing one-mark lr-parser + – Arjun 15.0k views answer comment Share Follow Print See all 6 Comments 6 6 Comments reply Show 3 previous comments Arjun commented Feb 8, 2019 reply Follow flag No. 'L' for left-to-right scan and 'R' for rightmost derivation. https://gateoverflow.in/299818/go-compiler1-parsing-6 15 15 replyShare js__ commented Nov 3, 2025 reply Follow flag LL is just left most , rest all are right most 2 2 replyShare GravitonQR commented Jan 18 reply Follow flag @js__because LL is top-down, all other are bottom up 0 0 replyShare Please log in or register to add a comment.
Best answer 39 39 votes A bottom-up parser traces a rightmost derivation in reverse. Answer (D). Digvijay Pandey answered Feb 7, 2019 • edited May 13, 2019 by Krithiga2101 Digvijay Pandey comment Share Follow 0 reply Please log in or register to add a comment.
13 13 votes Bottom Up parser – Rightmost derivation in reverse Top Down parser – Leftmost Derivation Mitali gupta answered Aug 26, 2020 Mitali gupta comment Share Follow 0 reply Please log in or register to add a comment.
0 0 votes LR parser are type of bottom up parser and LR(Left-to-right, Rightmost derivation in reverse) uses rightmost in reverse. https://en.wikipedia.org/wiki/LR_parser gaurav1.yuva answered Apr 23, 2019 gaurav1.yuva comment Share Follow 0 reply Please log in or register to add a comment.
0 0 votes LR parsers have Rightmost derivation in reverse. swettt871 answered Jan 30, 2021 swettt871 comment Share Follow 0 reply Please log in or register to add a comment.
0 0 votes LR(0), SLR(1), LR(1),LALR(1), CLR(1) : All have righmost derivation in reverseLL(1), LL(k): Left most derivation. Rohit0911 answered Jan 29, 2025 • edited Nov 17, 2025 by Rohit0911 1 flag: ✌ Edit necessary (Sarang_Gajare “LALR(1) is RMD in reverse”) Rohit0911 comment Share Follow See 1 comment 1 1 comment reply P0535_Yedidyah_Sagar commented Jul 28, 2025 reply Follow flag @Rohit0911Isn't LALR, right most derivation in reverse 0 0 replyShare Please log in or register to add a comment.
