Add transpose exercise

config.json

@@ -245,10 +245,10 @@
         "practices": [],
         "prerequisites": [],
         "difficulty": 2,
+        "status": "deprecated",
         "topics": [
           "algorithms, core_functions"
-        ],
-        "status": "deprecated"
+        ]
       },
       {
         "slug": "acronym",
@@ -745,10 +745,10 @@
         "practices": [],
         "prerequisites": [],
         "difficulty": 3,
+        "status": "deprecated",
         "topics": [
           "math"
-        ],
-        "status": "deprecated"
+        ]
       },
       {
         "slug": "binary-search",
@@ -856,10 +856,10 @@
         "practices": [],
         "prerequisites": [],
         "difficulty": 3,
+        "status": "deprecated",
         "topics": [
           "math"
-        ],
-        "status": "deprecated"
+        ]
       },
       {
         "slug": "isbn-verifier",
@@ -1018,10 +1018,10 @@
         "practices": [],
         "prerequisites": [],
         "difficulty": 3,
+        "status": "deprecated",
         "topics": [
           "math"
-        ],
-        "status": "deprecated"
+        ]
       },
       {
         "slug": "allergies",
@@ -1119,10 +1119,10 @@
         "practices": [],
         "prerequisites": [],
         "difficulty": 4,
+        "status": "deprecated",
         "topics": [
           "math"
-        ],
-        "status": "deprecated"
+        ]
       },
       {
         "slug": "spiral-matrix",
@@ -1211,6 +1211,19 @@
           "conditionals"
         ]
       },
+      {
+        "slug": "transpose",
+        "name": "Transpose",
+        "uuid": "a5dbea81-e24b-453e-bec9-bae4549ae52a",
+        "practices": [],
+        "prerequisites": [
+          "basics",
+          "chars",
+          "strings",
+          "vectors"
+        ],
+        "difficulty": 5
+      },
       {
         "slug": "wordy",
         "name": "Wordy",

exercises/practice/transpose/.docs/instructions.md

@@ -0,0 +1,61 @@
+# Instructions
+
+Given an input text output it transposed.
+
+Roughly explained, the transpose of a matrix:
+
+```text
+ABC
+DEF
+```
+
+is given by:
+
+```text
+AD
+BE
+CF
+```
+
+Rows become columns and columns become rows.
+See [transpose][].
+
+If the input has rows of different lengths, this is to be solved as follows:
+
+- Pad to the left with spaces.
+- Don't pad to the right.
+
+Therefore, transposing this matrix:
+
+```text
+ABC
+DE
+```
+
+results in:
+
+```text
+AD
+BE
+C
+```
+
+And transposing:
+
+```text
+AB
+DEF
+```
+
+results in:
+
+```text
+AD
+BE
+ F
+```
+
+In general, all characters from the input should also be present in the transposed output.
+That means that if a column in the input text contains only spaces on its bottom-most row(s), the corresponding output row should contain the spaces in its right-most column(s).
+
+[transpose]: https://en.wikipedia.org/wiki/Transpose

exercises/practice/transpose/.meta/config.json

@@ -0,0 +1,19 @@
+{
+  "authors": [
+    "tasxatzial"
+  ],
+  "files": {
+    "solution": [
+      "src/transpose.clj"
+    ],
+    "test": [
+      "test/transpose_test.clj"
+    ],
+    "example": [
+      ".meta/src/example.clj"
+    ]
+  },
+  "blurb": "Take input text and output it transposed.",
+  "source": "Reddit r/dailyprogrammer challenge #270 [Easy].",
+  "source_url": "https://web.archive.org/web/20230630051421/https://old.reddit.com/r/dailyprogrammer/comments/4msu2x/challenge_270_easy_transpose_the_input_text/"
+}

exercises/practice/transpose/.meta/src/example.clj

@@ -0,0 +1,21 @@
+(ns transpose)
+
+(defn pad-lines
+  [lines]
+  (if-let [reversed-lines (seq (reverse lines))]
+    (loop [rev-lines (rest reversed-lines)
+           padded-lines [(first reversed-lines)]]
+      (if (seq rev-lines)
+        (let [diff (- (.length (peek padded-lines)) (.length (first rev-lines)))
+              new-padded-line (str (first rev-lines) (apply str (repeat diff " ")))]
+          (recur (rest rev-lines) (conj padded-lines new-padded-line)))
+        (rseq padded-lines)))
+    []))
+
+(defn transpose
+  [s]
+  (loop [result []
+         padded-lines (-> s clojure.string/split-lines pad-lines)]
+    (if (seq (first padded-lines))
+      (recur (conj result (map first padded-lines)) (map rest padded-lines))
+      (clojure.string/join "\n" (map #(apply str %) result)))))

exercises/practice/transpose/.meta/tests.toml

@@ -0,0 +1,46 @@
+# This is an auto-generated file.
+#
+# Regenerating this file via `configlet sync` will:
+# - Recreate every `description` key/value pair
+# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
+# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
+# - Preserve any other key/value pair
+#
+# As user-added comments (using the # character) will be removed when this file
+# is regenerated, comments can be added via a `comment` key.
+
+[404b7262-c050-4df0-a2a2-0cb06cd6a821]
+description = "empty string"
+
+[a89ce8a3-c940-4703-a688-3ea39412fbcb]
+description = "two characters in a row"
+
+[855bb6ae-4180-457c-abd0-ce489803ce98]
+description = "two characters in a column"
+
+[5ceda1c0-f940-441c-a244-0ced197769c8]
+description = "simple"
+
+[a54675dd-ae7d-4a58-a9c4-0c20e99a7c1f]
+description = "single line"
+
+[0dc2ec0b-549d-4047-aeeb-8029fec8d5c5]
+description = "first line longer than second line"
+
+[984e2ec3-b3d3-4b53-8bd6-96f5ef404102]
+description = "second line longer than first line"
+
+[eccd3784-45f0-4a3f-865a-360cb323d314]
+description = "mixed line length"
+
+[85b96b3f-d00c-4f80-8ca2-c8a5c9216c2d]
+description = "square"
+
+[b9257625-7a53-4748-8863-e08e9d27071d]
+description = "rectangle"
+
+[b80badc9-057e-4543-bd07-ce1296a1ea2c]
+description = "triangle"
+
+[76acfd50-5596-4d05-89f1-5116328a7dd9]
+description = "jagged triangle"

exercises/practice/transpose/deps.edn

@@ -0,0 +1,6 @@
+{:aliases {:test {:extra-paths ["test"]
+                 :extra-deps {io.github.cognitect-labs/test-runner 
+                              {:git/url "https://github.com/cognitect-labs/test-runner.git"
+                               :sha "705ad25bbf0228b1c38d0244a36001c2987d7337"}}
+                 :main-opts ["-m" "cognitect.test-runner"]
+                 :exec-fn cognitect.test-runner.api/test}}}

exercises/practice/transpose/project.clj

@@ -0,0 +1,4 @@
+(defproject transpose "0.1.0-SNAPSHOT"
+  :description "transpose exercise."
+  :url "https://github.com/exercism/clojure/tree/master/exercises/transpose"
+  :dependencies [[org.clojure/clojure "1.11.1"]])

exercises/practice/transpose/src/transpose.clj

@@ -0,0 +1,7 @@
+(ns transpose)
+
+(defn transpose
+  "Given a string, it returns the transposed version"
+  [s]
+  ;; function body
+  )