Add kindergarten-garden exercise

config.json

@@ -242,6 +242,14 @@
         "prerequisites": [],
         "difficulty": 4
       },
+      {
+        "slug": "kindergarten-garden",
+        "name": "Kindergarten Garden",
+        "uuid": "0fcea5a1-5764-4f3b-b11b-9850a7e3acfb",
+        "practices": [],
+        "prerequisites": [],
+        "difficulty": 4
+      },
       {
         "slug": "perfect-numbers",
         "name": "Perfect Numbers",

exercises/practice/kindergarten-garden/.docs/instructions.append.md

@@ -0,0 +1,5 @@
+# Instructions append
+
+## Output format
+
+Output the student's plants as a null-terminated string, using a comma and a space as separators.

exercises/practice/kindergarten-garden/.docs/instructions.md

@@ -0,0 +1,56 @@
+# Instructions
+
+Your task is to, given a diagram, determine which plants each child in the kindergarten class is responsible for.
+
+There are 12 children in the class:
+
+- Alice, Bob, Charlie, David, Eve, Fred, Ginny, Harriet, Ileana, Joseph, Kincaid, and Larry.
+
+Four different types of seeds are planted:
+
+| Plant  | Diagram encoding |
+| ------ | ---------------- |
+| Grass  | G                |
+| Clover | C                |
+| Radish | R                |
+| Violet | V                |
+
+Each child gets four cups, two on each row:
+
+```text
+[window][window][window]
+........................ # each dot represents a cup
+........................
+```
+
+Their teacher assigns cups to the children alphabetically by their names, which means that Alice comes first and Larry comes last.
+
+Here is an example diagram representing Alice's plants:
+
+```text
+[window][window][window]
+VR......................
+RG......................
+```
+
+In the first row, nearest the windows, she has a violet and a radish.
+In the second row she has a radish and some grass.
+
+Your program will be given the plants from left-to-right starting with the row nearest the windows.
+From this, it should be able to determine which plants belong to each student.
+
+For example, if it's told that the garden looks like so:
+
+```text
+[window][window][window]
+VRCGVVRVCGGCCGVRGCVCGCGV
+VRCCCGCRRGVCGCRVVCVGCGCV
+```
+
+Then if asked for Alice's plants, it should provide:
+
+- Violets, radishes, violets, radishes
+
+While asking for Bob's plants would yield:
+
+- Clover, grass, clover, clover

exercises/practice/kindergarten-garden/.docs/introduction.md

@@ -0,0 +1,6 @@
+# Introduction
+
+The kindergarten class is learning about growing plants.
+The teacher thought it would be a good idea to give the class seeds to plant and grow in the dirt.
+To this end, the children have put little cups along the window sills and planted one type of plant in each cup.
+The children got to pick their favorites from four available types of seeds: grass, clover, radishes, and violets.

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

@@ -0,0 +1,19 @@
+{
+  "authors": [
+    "keiravillekode"
+  ],
+  "files": {
+    "solution": [
+      "kindergarten_garden.s"
+    ],
+    "test": [
+      "kindergarten_garden_test.c"
+    ],
+    "example": [
+      ".meta/example.s"
+    ]
+  },
+  "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"
+}

exercises/practice/kindergarten-garden/.meta/example.s

@@ -0,0 +1,49 @@
+.data
+names:  .string "        clover,         grass,                                      radishes,       violets, "
+
+.text
+.globl plants
+
+/* extern void plants(char *buffer, const char *diagram, const char *student); */
+plants:
+        adrp    x9, names
+        add     x9, x9, :lo12:names
+
+        ldrb    w2, [x2]                /* first letter of student */
+        sub     w2, w2, #'A'
+        lsl     w2, w2, #1              /* index into diagram for student's first plant */
+        add     w3, w2, #1              /* index into diagram for student's second plant */
+        mov     x4, x1                  /* pointer into diagram */
+
+.scan:
+        ldrb    w5, [x4], #1            /* load diagram byte, post-increment */
+        cbnz    w5, .scan
+
+        sub     x4, x4, x1              /* length of diagram */
+        lsr     x4, x4, #1              /* half of length of diagram */
+        mov     x7, sp
+        stp     w2, w3, [sp, #-16]!
+        add     w2, w2, w4              /* index into diagram for student's third plant */
+        add     w3, w3, w4              /* index into diagram for student's fourth plant */
+        stp     w2, w3, [sp, #8]
+        mov     x6, sp
+
+.next:
+        ldr     w2, [x6], #4            /* index into diagram for current plant */
+        ldrb    w2, [x1, x2]            /* load diagram byte */
+        sub     w2, w2, #'A'
+        lsl     w2, w2, #2
+        add     x2, x9, x2              /* pointer into names */
+
+.copy:
+        ldrb    w3, [x2], #1
+        strb    w3, [x0], #1
+        cmp     w3, #' '
+        bne     .copy
+
+        cmp     x6, x7
+        bne     .next
+
+        strb    wzr, [x0, #-2]          /* null terminator */
+        mov     sp, x7
+        ret

exercises/practice/kindergarten-garden/.meta/tests.toml

@@ -0,0 +1,61 @@
+# 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.
+
+[1fc316ed-17ab-4fba-88ef-3ae78296b692]
+description = "partial garden -> garden with single student"
+
+[acd19dc1-2200-4317-bc2a-08f021276b40]
+description = "partial garden -> different garden with single student"
+
+[c376fcc8-349c-446c-94b0-903947315757]
+description = "partial garden -> garden with two students"
+
+[2d620f45-9617-4924-9d27-751c80d17db9]
+description = "partial garden -> multiple students for the same garden with three students -> second student's garden"
+
+[57712331-4896-4364-89f8-576421d69c44]
+description = "partial garden -> multiple students for the same garden with three students -> third student's garden"
+
+[149b4290-58e1-40f2-8ae4-8b87c46e765b]
+description = "full garden -> for Alice, first student's garden"
+
+[ba25dbbc-10bd-4a37-b18e-f89ecd098a5e]
+description = "full garden -> for Bob, second student's garden"
+
+[566b621b-f18e-4c5f-873e-be30544b838c]
+description = "full garden -> for Charlie"
+
+[3ad3df57-dd98-46fc-9269-1877abf612aa]
+description = "full garden -> for David"
+
+[0f0a55d1-9710-46ed-a0eb-399ba8c72db2]
+description = "full garden -> for Eve"
+
+[a7e80c90-b140-4ea1-aee3-f4625365c9a4]
+description = "full garden -> for Fred"
+
+[9d94b273-2933-471b-86e8-dba68694c615]
+description = "full garden -> for Ginny"
+
+[f55bc6c2-ade8-4844-87c4-87196f1b7258]
+description = "full garden -> for Harriet"
+
+[759070a3-1bb1-4dd4-be2c-7cce1d7679ae]
+description = "full garden -> for Ileana"
+
+[78578123-2755-4d4a-9c7d-e985b8dda1c6]
+description = "full garden -> for Joseph"
+
+[6bb66df7-f433-41ab-aec2-3ead6e99f65b]
+description = "full garden -> for Kincaid, second to last student's garden"
+
+[d7edec11-6488-418a-94e6-ed509e0fa7eb]
+description = "full garden -> for Larry, last student's garden"

exercises/practice/kindergarten-garden/Makefile

@@ -0,0 +1,36 @@
+AS = aarch64-linux-gnu-as
+CC = aarch64-linux-gnu-gcc
+
+CFLAGS = -g -Wall -Wextra -pedantic -Werror
+LDFLAGS =
+
+ALL_LDFLAGS = -pie -Wl,--fatal-warnings
+
+ALL_CFLAGS = -std=c99 -fPIE $(CFLAGS)
+ALL_LDFLAGS += $(LDFLAGS)
+
+C_OBJS = $(patsubst %.c,%.o,$(wildcard *.c))
+AS_OBJS = $(patsubst %.s,%.o,$(wildcard *.s))
+ALL_OBJS = $(filter-out example.o,$(C_OBJS) $(AS_OBJS) vendor/unity.o)
+
+CC_CMD = $(CC) $(ALL_CFLAGS) -c -o $@ $<
+
+all: tests
+	qemu-aarch64 -L /usr/aarch64-linux-gnu ./$<
+
+tests: $(ALL_OBJS)
+	@$(CC) $(ALL_CFLAGS) $(ALL_LDFLAGS) -o $@ $(ALL_OBJS)
+
+%.o: %.s
+	@$(AS) -o $@ $<
+
+%.o: %.c
+	@$(CC_CMD)
+
+vendor/unity.o: vendor/unity.c vendor/unity.h vendor/unity_internals.h
+	@$(CC_CMD)
+
+clean:
+	@rm -f *.o vendor/*.o tests
+
+.PHONY: all clean

exercises/practice/kindergarten-garden/kindergarten_garden.s

@@ -0,0 +1,5 @@
+.text
+.globl plants
+
+plants:
+    ret