algo_plus: add package (#4540)

Author: star-hengxing

packages/a/algo_plus/xmake.lua

@@ -0,0 +1,27 @@
+package("algo_plus")
+    set_kind("library", {headeronly = true})
+    set_homepage("https://csrt-ntua.github.io/AlgoPlus")
+    set_description("AlgoPlus is a C++17 library for complex data structures and algorithms")
+    set_license("Apache-2.0")
+
+    add_urls("https://github.com/CSRT-NTUA/AlgoPlus.git")
+    add_versions("2024.07.02", "1287dfc5bf666bace15af9c14d03e807b71efa82")
+
+    add_deps("nlohmann_json")
+
+    on_install(function (package)
+        for _, file in ipairs(os.files("src/**.h")) do
+            io.replace(file, "../../../../third_party/json.hpp", "nlohmann/json.hpp", {plain = true})
+        end
+        os.cp("src/*", package:installdir("include"))
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            void test() {
+                std::vector<std::vector<double> > data;
+                int CLUSTERS;
+                kmeans a(data, CLUSTERS);
+            }
+        ]]}, {configs = {languages = "c++17"}, includes = {"machine_learning/clustering/kmeans/kmeans.h"}}))
+    end)