From bd65a068dc252e499ed93bd1db8e95029ebfcd40 Mon Sep 17 00:00:00 2001 From: Fabricio Cabral Date: Sat, 17 Jun 2017 22:11:30 -0300 Subject: [PATCH] #172: Max and Min --- src/main/java/org/cactoos/math/Max.java | 62 +++++++++++++++++++ src/main/java/org/cactoos/math/Min.java | 62 +++++++++++++++++++ .../java/org/cactoos/math/package-info.java | 32 ++++++++++ src/test/java/org/cactoos/math/MaxTest.java | 60 ++++++++++++++++++ src/test/java/org/cactoos/math/MinTest.java | 60 ++++++++++++++++++ .../java/org/cactoos/math/package-info.java | 32 ++++++++++ 6 files changed, 308 insertions(+) create mode 100644 src/main/java/org/cactoos/math/Max.java create mode 100644 src/main/java/org/cactoos/math/Min.java create mode 100644 src/main/java/org/cactoos/math/package-info.java create mode 100644 src/test/java/org/cactoos/math/MaxTest.java create mode 100644 src/test/java/org/cactoos/math/MinTest.java create mode 100644 src/test/java/org/cactoos/math/package-info.java diff --git a/src/main/java/org/cactoos/math/Max.java b/src/main/java/org/cactoos/math/Max.java new file mode 100644 index 0000000000..bf201a78f7 --- /dev/null +++ b/src/main/java/org/cactoos/math/Max.java @@ -0,0 +1,62 @@ +/** + * The MIT License (MIT) + * + * Copyright (c) 2017 Yegor Bugayenko + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +package org.cactoos.math; + +import org.cactoos.Scalar; + +/** + * Find the greater among numbers. + * + *

There is no thread-safety guarantee. + * + * @author Fabricio Cabral (fabriciofx@gmail.com) + * @version $Id$ + * @since 0.6 + */ +public final class Max implements Scalar { + + /** + * Numbers. + */ + private final Number[] numbers; + + /** + * Ctor. + * @param numbers The numbers + */ + public Max(final Number... numbers) { + this.numbers = numbers; + } + + @Override + public Number asValue() throws Exception { + Number max = this.numbers[0]; + for (int index = 1; index < this.numbers.length; ++index) { + if (this.numbers[index].doubleValue() > max.doubleValue()) { + max = this.numbers[index]; + } + } + return max; + } +} diff --git a/src/main/java/org/cactoos/math/Min.java b/src/main/java/org/cactoos/math/Min.java new file mode 100644 index 0000000000..3953891ff3 --- /dev/null +++ b/src/main/java/org/cactoos/math/Min.java @@ -0,0 +1,62 @@ +/** + * The MIT License (MIT) + * + * Copyright (c) 2017 Yegor Bugayenko + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +package org.cactoos.math; + +import org.cactoos.Scalar; + +/** + * Find the smaller among numbers. + * + *

There is no thread-safety guarantee. + * + * @author Fabricio Cabral (fabriciofx@gmail.com) + * @version $Id$ + * @since 0.6 + */ +public final class Min implements Scalar { + + /** + * Numbers. + */ + private final Number[] numbers; + + /** + * Ctor. + * @param numbers The numbers + */ + public Min(final Number... numbers) { + this.numbers = numbers; + } + + @Override + public Number asValue() throws Exception { + Number min = this.numbers[0]; + for (int index = 1; index < this.numbers.length; ++index) { + if (this.numbers[index].doubleValue() < min.doubleValue()) { + min = this.numbers[index]; + } + } + return min; + } +} diff --git a/src/main/java/org/cactoos/math/package-info.java b/src/main/java/org/cactoos/math/package-info.java new file mode 100644 index 0000000000..bf0356e516 --- /dev/null +++ b/src/main/java/org/cactoos/math/package-info.java @@ -0,0 +1,32 @@ +/** + * The MIT License (MIT) + * + * Copyright (c) 2017 Yegor Bugayenko + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +/** + * Math. + * + * @author Fabricio Cabral (fabriciofx@gmail.com) + * @version $Id$ + * @since 0.6 + */ +package org.cactoos.math; diff --git a/src/test/java/org/cactoos/math/MaxTest.java b/src/test/java/org/cactoos/math/MaxTest.java new file mode 100644 index 0000000000..7465d9606d --- /dev/null +++ b/src/test/java/org/cactoos/math/MaxTest.java @@ -0,0 +1,60 @@ +/** + * The MIT License (MIT) + * + * Copyright (c) 2017 Yegor Bugayenko + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +package org.cactoos.math; + +import org.hamcrest.MatcherAssert; +import org.hamcrest.Matchers; +import org.junit.Test; + +/** + * Test case for {@link Max}. + * + * @author Fabricio Cabral (fabriciofx@gmail.com) + * @version $Id$ + * @since 0.6 + * @checkstyle JavadocMethodCheck (500 lines) + */ +@SuppressWarnings("PMD.AvoidDuplicateLiterals") +public final class MaxTest { + + @Test + public void maxAmongOneTest() throws Exception { + MatcherAssert.assertThat( + "Can't find the greater number", + // @checkstyle MagicNumber (2 lines) + new Max(10).asValue(), + Matchers.equalTo(10) + ); + } + + @Test + public void maxAmongManyTest() throws Exception { + MatcherAssert.assertThat( + "Can't find the greater number", + // @checkstyle MagicNumber (2 lines) + new Max(10, 5, 7, 2, 100).asValue(), + Matchers.equalTo(100) + ); + } +} diff --git a/src/test/java/org/cactoos/math/MinTest.java b/src/test/java/org/cactoos/math/MinTest.java new file mode 100644 index 0000000000..028ea7d434 --- /dev/null +++ b/src/test/java/org/cactoos/math/MinTest.java @@ -0,0 +1,60 @@ +/** + * The MIT License (MIT) + * + * Copyright (c) 2017 Yegor Bugayenko + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +package org.cactoos.math; + +import org.hamcrest.MatcherAssert; +import org.hamcrest.Matchers; +import org.junit.Test; + +/** + * Test case for {@link Min}. + * + * @author Fabricio Cabral (fabriciofx@gmail.com) + * @version $Id$ + * @since 0.6 + * @checkstyle JavadocMethodCheck (500 lines) + */ +@SuppressWarnings("PMD.AvoidDuplicateLiterals") +public final class MinTest { + + @Test + public void minAmongOneTest() throws Exception { + MatcherAssert.assertThat( + "Can't find the smaller number", + // @checkstyle MagicNumber (2 lines) + new Min(10).asValue(), + Matchers.equalTo(10) + ); + } + + @Test + public void minAmongManyTest() throws Exception { + MatcherAssert.assertThat( + "Can't find the smaller number", + // @checkstyle MagicNumber (2 lines) + new Min(10, 5, 7, 2, 100).asValue(), + Matchers.equalTo(2) + ); + } +} diff --git a/src/test/java/org/cactoos/math/package-info.java b/src/test/java/org/cactoos/math/package-info.java new file mode 100644 index 0000000000..443c141469 --- /dev/null +++ b/src/test/java/org/cactoos/math/package-info.java @@ -0,0 +1,32 @@ +/** + * The MIT License (MIT) + * + * Copyright (c) 2017 Yegor Bugayenko + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +/** + * Math, tests. + * + * @author Fabricio Cabral (fabriciofx@gmail.com) + * @version $Id$ + * @since 0.6 + */ +package org.cactoos.math;