From 5120da5fa92918f35de95d8a4bfc2d379d1bf31b Mon Sep 17 00:00:00 2001 From: Dmitry Kokorin Date: Sun, 20 Mar 2016 16:54:13 +0300 Subject: [PATCH] raindrops: initial commit --- cpp/raindrops/CMakeLists.txt | 59 ++++++++++++++++++++++ cpp/raindrops/README.md | 55 +++++++++++++++++++++ cpp/raindrops/raindrops_test.cpp | 85 ++++++++++++++++++++++++++++++++ 3 files changed, 199 insertions(+) create mode 100644 cpp/raindrops/CMakeLists.txt create mode 100644 cpp/raindrops/README.md create mode 100644 cpp/raindrops/raindrops_test.cpp diff --git a/cpp/raindrops/CMakeLists.txt b/cpp/raindrops/CMakeLists.txt new file mode 100644 index 0000000..56a3675 --- /dev/null +++ b/cpp/raindrops/CMakeLists.txt @@ -0,0 +1,59 @@ +# Get the exercise name from the current directory +get_filename_component(exercise ${CMAKE_CURRENT_SOURCE_DIR} NAME) + +# Basic CMake project +cmake_minimum_required(VERSION 2.8.11) + +# Name the project after the exercise +project(${exercise} CXX) + +# Locate Boost libraries: unit_test_framework, date_time and regex +set(Boost_USE_STATIC_LIBS ON) +set(Boost_USE_MULTITHREADED ON) +set(Boost_USE_STATIC_RUNTIME OFF) +find_package(Boost 1.55 REQUIRED COMPONENTS unit_test_framework date_time regex) + +# Enable C++11 features on gcc/clang +if("${CMAKE_CXX_COMPILER_ID}" MATCHES "(GNU|Clang)") + set(CMAKE_CXX_FLAGS "-std=c++11") +endif() + +# Configure to run all the tests? +if(${EXERCISM_RUN_ALL_TESTS}) + add_definitions(-DEXERCISM_RUN_ALL_TESTS) +endif() + +# Get a source filename from the exercise name by replacing -'s with _'s +string(REPLACE "-" "_" file ${exercise}) + +# Implementation could be only a header +if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${file}.cpp) + set(exercise_cpp ${file}.cpp) +else() + set(exercise_cpp "") +endif() + +# Include a test helper header if it exists +if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/require_equal_containers.h) + set(test_helper require_equal_containers.h) +else() + set(test_helper "") +endif() + +# Build executable from sources and headers +add_executable(${exercise} ${file}_test.cpp ${test_helper} ${exercise_cpp} ${file}.h) + +# We need boost includes +target_include_directories(${exercise} PRIVATE ${Boost_INCLUDE_DIRS}) + +# We need boost libraries +target_link_libraries(${exercise} ${Boost_LIBRARIES}) + +# Tell MSVC not to warn us about unchecked iterators in debug builds +if(${MSVC}) + set_target_properties(${exercise} PROPERTIES + COMPILE_DEFINITIONS_DEBUG _SCL_SECURE_NO_WARNINGS) +endif() + +# Run the tests on every build +add_custom_command(TARGET ${exercise} POST_BUILD COMMAND ${exercise}) diff --git a/cpp/raindrops/README.md b/cpp/raindrops/README.md new file mode 100644 index 0000000..ce22a2e --- /dev/null +++ b/cpp/raindrops/README.md @@ -0,0 +1,55 @@ +# Raindrops + +Write a program that converts a number to a string, the contents of which depends on the number's prime factors. + +- If the number contains 3 as a prime factor, output 'Pling'. +- If the number contains 5 as a prime factor, output 'Plang'. +- If the number contains 7 as a prime factor, output 'Plong'. +- If the number does not contain 3, 5, or 7 as a prime factor, + just pass the number's digits straight through. + +## Examples + +- 28's prime-factorization is 2, 2, 7. + - In raindrop-speak, this would be a simple "Plong". +- 1755 prime-factorization is 3, 3, 3, 5, 13. + - In raindrop-speak, this would be a "PlingPlang". +- The prime factors of 34 are 2 and 17. + - Raindrop-speak doesn't know what to make of that, + so it just goes with the straightforward "34". + +## Getting Started + +Make sure you have read the [getting started with C++](http://help.exercism.io/getting-started-with-cpp.html) +page on the [exercism help site](http://help.exercism.io/). This covers +the basic information on setting up the development environment expected +by the exercises. + +## Passing the Tests + +Get the first test compiling, linking and passing by following the [three +rules of test-driven development](http://butunclebob.com/ArticleS.UncleBob.TheThreeRulesOfTdd). +Create just enough structure by declaring namespaces, functions, classes, +etc., to satisfy any compiler errors and get the test to fail. Then write +just enough code to get the test to pass. Once you've done that, +uncomment the next test by moving the following line past the next test. + +```C++ +#if defined(EXERCISM_RUN_ALL_TESTS) +``` + +This may result in compile errors as new constructs may be invoked that +you haven't yet declared or defined. Again, fix the compile errors minimally +to get a failing test, then change the code minimally to pass the test, +refactor your implementation for readability and expressiveness and then +go on to the next test. + +Try to use standard C++11 facilities in preference to writing your own +low-level algorithms or facilities by hand. [CppReference](http://en.cppreference.com/) +is a wiki reference to the C++ language and standard library. If you +are new to C++, but have programmed in C, beware of +[C traps and pitfalls](http://www.slideshare.net/LegalizeAdulthood/c-traps-and-pitfalls-for-c-programmers). + +## Source + +A variation on a famous interview question intended to weed out potential candidates. [view source](http://jumpstartlab.com) diff --git a/cpp/raindrops/raindrops_test.cpp b/cpp/raindrops/raindrops_test.cpp new file mode 100644 index 0000000..8678b40 --- /dev/null +++ b/cpp/raindrops/raindrops_test.cpp @@ -0,0 +1,85 @@ +#include "raindrops.h" +#define BOOST_TEST_MAIN +#include + +BOOST_AUTO_TEST_CASE(one_yields_itself) +{ + BOOST_REQUIRE_EQUAL("1", raindrops::convert(1)); +} + +#if defined(EXERCISM_RUN_ALL_TESTS) +BOOST_AUTO_TEST_CASE(three_yields_pling) +{ + BOOST_REQUIRE_EQUAL("Pling", raindrops::convert(3)); +} + +BOOST_AUTO_TEST_CASE(five_yields_plang) +{ + BOOST_REQUIRE_EQUAL("Plang", raindrops::convert(5)); +} + +BOOST_AUTO_TEST_CASE(seven_yields_plong) +{ + BOOST_REQUIRE_EQUAL("Plong", raindrops::convert(7)); +} + +BOOST_AUTO_TEST_CASE(six_yields_pling) +{ + BOOST_REQUIRE_EQUAL("Pling", raindrops::convert(6)); +} + +BOOST_AUTO_TEST_CASE(nine_yields_pling) +{ + BOOST_REQUIRE_EQUAL("Pling", raindrops::convert(9)); +} + +BOOST_AUTO_TEST_CASE(ten_yields_plang) +{ + BOOST_REQUIRE_EQUAL("Plang", raindrops::convert(10)); +} + +BOOST_AUTO_TEST_CASE(fourteen_yields_plong) +{ + BOOST_REQUIRE_EQUAL("Plong", raindrops::convert(14)); +} + +BOOST_AUTO_TEST_CASE(fifteen_yields_plingplang) +{ + BOOST_REQUIRE_EQUAL("PlingPlang", raindrops::convert(15)); +} + +BOOST_AUTO_TEST_CASE(twenty_one_yields_plingplong) +{ + BOOST_REQUIRE_EQUAL("PlingPlong", raindrops::convert(21)); +} + +BOOST_AUTO_TEST_CASE(twenty_five_yields_plang) +{ + BOOST_REQUIRE_EQUAL("Plang", raindrops::convert(25)); +} + +BOOST_AUTO_TEST_CASE(thirty_five_yields_plangplong) +{ + BOOST_REQUIRE_EQUAL("PlangPlong", raindrops::convert(35)); +} + +BOOST_AUTO_TEST_CASE(forty_nine_yields_plong) +{ + BOOST_REQUIRE_EQUAL("Plong", raindrops::convert(49)); +} + +BOOST_AUTO_TEST_CASE(fifty_two_yields_itself) +{ + BOOST_REQUIRE_EQUAL("52", raindrops::convert(52)); +} + +BOOST_AUTO_TEST_CASE(one_hundred_five_yields_plingplangplong) +{ + BOOST_REQUIRE_EQUAL("PlingPlangPlong", raindrops::convert(105)); +} + +BOOST_AUTO_TEST_CASE(big_prime_yields_itself) +{ + BOOST_REQUIRE_EQUAL("12121", raindrops::convert(12121)); +} +#endif