feat: solve day 5 puzzle 1

src/day05/puzzle1.lua

@@ -0,0 +1,39 @@
+local strings = require "cc.strings"
+local puzzle1 = {}
+
+function puzzle1.isFresh(ranges, i)
+    for _, range in ipairs(ranges) do
+        if range[1] <= i and i <= range[2] then
+            return true
+        end
+    end
+    return false
+end
+
+function puzzle1.solve(input)
+    local lines = strings.split(input, "\n")
+    local ranges = {}
+
+    local bIngr = false
+    local totalFresh = 0
+
+    for _, line in ipairs(lines) do
+        if line == "" then
+            bIngr = true
+        else
+            if bIngr then
+                local ingr = tonumber(line)
+                if puzzle1.isFresh(ranges, ingr) then
+                    totalFresh = totalFresh + 1
+                end
+            else
+                local min, max = line:match("(%d+)%-(%d+)")
+                table.insert(ranges, {tonumber(min), tonumber(max)})
+            end
+        end
+    end
+
+    return totalFresh
+end
+
+return puzzle1