Writing RPAL Programs

Writing RPAL Programs Programming Language Concepts Lecture 13 Prepared by Manuel E. Bermúdez, Ph.D. Associate Professor University of Florida

Writing RPAL Programs • First, review RPAL's syntax

Let's Write a Few Programs • Factorial: • Bottom-up (classic) • Top down. • Top-down, counting from 1 to n, • Bottom-up, counting from 1 to n. • Palindrome (classic) • Add up numbers in a list. • Variation: find smallest one.

Let's Write a Few Programs (cont’d) • Remove repeated numbers from a tuple. • Create pairs of characters from two strings. P('abc','def')=('ad', 'be', 'cf') • Inner product of two vectors: IP( (1,2,3), (1,2,3)) = 14

Let's Write a Few Programs (cont’d) • Pretty-print a tree. • Recursively build a string. • NOTE: parentheses required ! • Variation 1: structure the program using 'lets'. • Variation 2: print the number of children for each node.

Writing RPAL Programs Programming Language Concepts Lecture 13 Prepared by Manuel E. Bermúdez, Ph.D. Associate Professor University of Florida

Writing RPAL Programs

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