Sync problem specs

exercises/practice/allergies/.meta/config.json

@@ -21,5 +21,5 @@
   },
   "blurb": "Given a person's allergy score, determine whether or not they're allergic to a given item, and their full list of allergies.",
   "source": "Exercise by the JumpstartLab team for students at The Turing School of Software and Design.",
-  "source_url": "https://turing.edu"
+  "source_url": "https://www.turing.edu/"
 }

exercises/practice/bob/.meta/config.json

@@ -23,5 +23,5 @@
   },
   "blurb": "Bob is a lackadaisical teenager. In conversation, his responses are very limited.",
   "source": "Inspired by the 'Deaf Grandma' exercise in Chris Pine's Learn to Program tutorial.",
-  "source_url": "https://pine.fm/LearnToProgram/?Chapter=06"
+  "source_url": "https://pine.fm/LearnToProgram/chap_06.html"
 }

exercises/practice/etl/.meta/config.json

@@ -20,5 +20,5 @@
   },
   "blurb": "Change the data format for scoring a game to more easily add other languages.",
   "source": "Based on an exercise by the JumpstartLab team for students at The Turing School of Software and Design.",
-  "source_url": "https://turing.edu"
+  "source_url": "https://www.turing.edu/"
 }

exercises/practice/gigasecond/.meta/config.json

@@ -23,5 +23,5 @@
   },
   "blurb": "Given a moment, determine the moment that would be after a gigasecond has passed.",
   "source": "Chapter 9 in Chris Pine's online Learn to Program tutorial.",
-  "source_url": "https://pine.fm/LearnToProgram/?Chapter=09"
+  "source_url": "https://pine.fm/LearnToProgram/chap_09.html"
 }

exercises/practice/grep/.meta/config.json

@@ -21,5 +21,5 @@
   },
   "blurb": "Search a file for lines matching a regular expression pattern. Return the line number and contents of each matching line.",
   "source": "Conversation with Nate Foster.",
-  "source_url": "https://www.cs.cornell.edu/Courses/cs3110/2014sp/hw/0/ps0.pdf"
+  "source_url": "https://www.cs.cornell.edu/courses/cs3110/2014sp/hw/0/ps0.pdf"
 }

exercises/practice/kindergarten-garden/.meta/config.json

@@ -15,5 +15,5 @@
   },
   "blurb": "Given a diagram, determine which plants each child in the kindergarten class is responsible for.",
   "source": "Exercise by the JumpstartLab team for students at The Turing School of Software and Design.",
-  "source_url": "https://turing.edu"
+  "source_url": "https://www.turing.edu/"
 }

exercises/practice/perfect-numbers/.meta/example.rkt

@@ -7,7 +7,8 @@
             #:when (zero? (remainder n i)))
     i))
 
-(define (classify n)
+(define/contract (classify n)
+  (-> exact-positive-integer? symbol?)
   (let ([sumdivisors (divisor-sum n)])
     (cond [(= n sumdivisors) 'perfect]
           [(> n sumdivisors) 'deficient]

exercises/practice/perfect-numbers/.meta/tests.toml

@@ -27,6 +27,9 @@ description = "Abundant numbers -> Medium abundant number is classified correctl
 [ec7792e6-8786-449c-b005-ce6dd89a772b]
 description = "Abundant numbers -> Large abundant number is classified correctly"
 
+[05f15b93-849c-45e9-9c7d-1ea131ef7d10]
+description = "Abundant numbers -> Perfect square abundant number is classified correctly"
+
 [e610fdc7-2b6e-43c3-a51c-b70fb37413ba]
 description = "Deficient numbers -> Smallest prime deficient number is classified correctly"
 

exercises/practice/perfect-numbers/perfect-numbers-test.rkt

@@ -21,6 +21,22 @@
                   (classify 33550336)
                   'perfect)
 
+     (test-equal? "Smallest abundant number"
+                  (classify 12)
+                  'abundant)
+
+     (test-equal? "Medium abundant number"
+                  (classify 30)
+                  'abundant)
+
+     (test-equal? "Large abundant number"
+                  (classify 33550335)
+                  'abundant)
+
+     (test-equal? "Perfect square abundant number"
+                  (classify 196)
+                  'abundant)
+
      (test-equal? "Smallest prime deficient number"
                   (classify 2)
                   'deficient)
@@ -41,16 +57,12 @@
                   (classify 1)
                   'deficient)
 
-     (test-equal? "Smallest abundant number"
-                  (classify 12)
-                  'abundant)
+     (test-exn "zero is rejected"
+                exn:fail?
+                (lambda () (classify 0)))
 
-     (test-equal? "Medium abundant number"
-                  (classify 30)
-                  'abundant)
-
-     (test-equal? "Large abundant number"
-                  (classify 33550335)
-                  'abundant)))
+     (test-exn "negative integer is rejected"
+                exn:fail?
+                (lambda () (classify -1)))))
 
   (run-tests suite))

exercises/practice/phone-number/.meta/config.json

@@ -22,5 +22,5 @@
   },
   "blurb": "Clean up user-entered phone numbers so that they can be sent SMS messages.",
   "source": "Exercise by the JumpstartLab team for students at The Turing School of Software and Design.",
-  "source_url": "https://turing.edu"
+  "source_url": "https://www.turing.edu/"
 }

exercises/practice/pig-latin/.meta/config.json

@@ -15,5 +15,5 @@
   },
   "blurb": "Implement a program that translates from English to Pig Latin.",
   "source": "The Pig Latin exercise at Test First Teaching by Ultrasaurus",
-  "source_url": "https://github.com/ultrasaurus/test-first-teaching/blob/master/learn_ruby/pig_latin/"
+  "source_url": "https://github.com/ultrasaurus/test-first-teaching/tree/master/learn_ruby/pig_latin"
 }

exercises/practice/reverse-string/.meta/config.json

@@ -20,5 +20,5 @@
   },
   "blurb": "Reverse a given string.",
   "source": "Introductory challenge to reverse an input string",
-  "source_url": "https://medium.freecodecamp.org/how-to-reverse-a-string-in-javascript-in-3-different-ways-75e4763c68cb"
+  "source_url": "https://www.freecodecamp.org/news/how-to-reverse-a-string-in-javascript-in-3-different-ways-75e4763c68cb"
 }

exercises/practice/space-age/.meta/config.json

@@ -15,5 +15,5 @@
   },
   "blurb": "Given an age in seconds, calculate how old someone is in terms of a given planet's solar years.",
   "source": "Partially inspired by Chapter 1 in Chris Pine's online Learn to Program tutorial.",
-  "source_url": "https://pine.fm/LearnToProgram/?Chapter=01"
+  "source_url": "https://pine.fm/LearnToProgram/chap_01.html"
 }

exercises/practice/triangle/.meta/config.json

@@ -18,5 +18,5 @@
   },
   "blurb": "Determine if a triangle is equilateral, isosceles, or scalene.",
   "source": "The Ruby Koans triangle project, parts 1 & 2",
-  "source_url": "https://web.archive.org/web/20220831105330/http://rubykoans.com"
+  "source_url": "https://www.rubykoans.com/"
 }