chore: initialize repository with gitignore

hw1/.gitattributes

@@ -0,0 +1,12 @@
+#
+# https://help.github.com/articles/dealing-with-line-endings/
+#
+# Linux start script should use lf
+/gradlew        text eol=lf
+
+# These are Windows script files and should use crlf
+*.bat           text eol=crlf
+
+# Binary files should be left untouched
+*.jar           binary
+

hw1/.gitignore

@@ -0,0 +1,5 @@
+# Ignore Gradle project-specific cache directory
+.gradle
+
+# Ignore Gradle build output directory
+build

hw1/app/build.gradle

@@ -0,0 +1,29 @@
+plugins {
+    id 'application'
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    testImplementation libs.junit.jupiter
+
+    testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+
+    implementation libs.guava
+}
+
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(21)
+    }
+}
+
+application {
+    mainClass = 'triangle.App'
+}
+
+tasks.named('test') {
+    useJUnitPlatform()
+}

hw1/app/src/main/java/triangle/App.java

@@ -0,0 +1,50 @@
+package triangle;
+
+public class App {
+
+    public enum TriangleType {
+        EQUILATERAL,  // 等边三角形
+        ISOSCELES,    // 等腰三角形
+        SCALENE,      // 一般三角形
+        NOT_A_TRIANGLE // 非三角形
+    }
+
+    public static TriangleType classify(int a, int b, int c) {
+        // 检查边长是否为正整数
+        if (a <= 0 || b <= 0 || c <= 0) {
+            return TriangleType.NOT_A_TRIANGLE;
+        }
+
+        // 检查三角不等式（任意两边之和大于第三边）
+        // 使用 long 防止整数溢出
+        if ((long) a + b <= c || (long) a + c <= b || (long) b + c <= a) {
+            return TriangleType.NOT_A_TRIANGLE;
+        }
+
+        // 判断三角形类型
+        if (a == b && b == c) {
+            return TriangleType.EQUILATERAL;
+        } else if (a == b || b == c || a == c) {
+            return TriangleType.ISOSCELES;
+        } else {
+            return TriangleType.SCALENE;
+        }
+    }
+
+    public static void main(String[] args) {
+        if (args.length != 3) {
+            System.out.println("用法: java triangle.App <边1> <边2> <边3>");
+            return;
+        }
+        int a = Integer.parseInt(args[0]);
+        int b = Integer.parseInt(args[1]);
+        int c = Integer.parseInt(args[2]);
+        TriangleType result = classify(a, b, c);
+        switch (result) {
+            case EQUILATERAL -> System.out.println("等边三角形");
+            case ISOSCELES -> System.out.println("等腰三角形");
+            case SCALENE -> System.out.println("一般三角形");
+            case NOT_A_TRIANGLE -> System.out.println("非三角形");
+        }
+    }
+}

hw1/app/src/test/java/triangle/AppTest.java

@@ -0,0 +1,208 @@
+package triangle;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.DisplayName;
+import static org.junit.jupiter.api.Assertions.*;
+import triangle.App.TriangleType;
+
+class AppTest {
+
+    // ========================================================================
+    // 等价类划分
+    // ========================================================================
+    //
+    // 输入条件: 三个整数 a, b, c 作为三角形的三条边
+    //
+    // 有效等价类:
+    //   EC1: 等边三角形 (a=b=c, 且 a>0)
+    //   EC2: 等腰三角形 (恰好两边相等, 且满足三角不等式)
+    //   EC3: 一般三角形 (三边互不相等, 且满足三角不等式)
+    //
+    // 无效等价类:
+    //   EC4: 某边为 0
+    //   EC5: 某边为负数
+    //   EC6: 两边之和等于第三边 (退化三角形)
+    //   EC7: 两边之和小于第三边 (不满足三角不等式)
+    //   EC8: 整数溢出边界 (极大值)
+    //
+    // ========================================================================
+
+    // --- 有效等价类测试 ---
+
+    @Test
+    @DisplayName("EC1: 等边三角形 - 三边相等")
+    void testEquilateral() {
+        assertEquals(TriangleType.EQUILATERAL, App.classify(5, 5, 5));
+    }
+
+    @Test
+    @DisplayName("EC2a: 等腰三角形 - a=b≠c")
+    void testIsoscelesABEqual() {
+        assertEquals(TriangleType.ISOSCELES, App.classify(5, 5, 3));
+    }
+
+    @Test
+    @DisplayName("EC2b: 等腰三角形 - a=c≠b")
+    void testIsoscelesACEqual() {
+        assertEquals(TriangleType.ISOSCELES, App.classify(5, 3, 5));
+    }
+
+    @Test
+    @DisplayName("EC2c: 等腰三角形 - b=c≠a")
+    void testIsoscelesBCEqual() {
+        assertEquals(TriangleType.ISOSCELES, App.classify(3, 5, 5));
+    }
+
+    @Test
+    @DisplayName("EC3: 一般三角形 - 三边互不相等")
+    void testScalene() {
+        assertEquals(TriangleType.SCALENE, App.classify(3, 4, 5));
+    }
+
+    // --- 无效等价类测试 ---
+
+    @Test
+    @DisplayName("EC4a: 第一边为0")
+    void testZeroSideA() {
+        assertEquals(TriangleType.NOT_A_TRIANGLE, App.classify(0, 5, 5));
+    }
+
+    @Test
+    @DisplayName("EC4b: 第二边为0")
+    void testZeroSideB() {
+        assertEquals(TriangleType.NOT_A_TRIANGLE, App.classify(5, 0, 5));
+    }
+
+    @Test
+    @DisplayName("EC4c: 第三边为0")
+    void testZeroSideC() {
+        assertEquals(TriangleType.NOT_A_TRIANGLE, App.classify(5, 5, 0));
+    }
+
+    @Test
+    @DisplayName("EC5a: 第一边为负数")
+    void testNegativeSideA() {
+        assertEquals(TriangleType.NOT_A_TRIANGLE, App.classify(-1, 5, 5));
+    }
+
+    @Test
+    @DisplayName("EC5b: 第二边为负数")
+    void testNegativeSideB() {
+        assertEquals(TriangleType.NOT_A_TRIANGLE, App.classify(5, -1, 5));
+    }
+
+    @Test
+    @DisplayName("EC5c: 第三边为负数")
+    void testNegativeSideC() {
+        assertEquals(TriangleType.NOT_A_TRIANGLE, App.classify(5, 5, -1));
+    }
+
+    @Test
+    @DisplayName("EC6a: a+b=c 退化三角形")
+    void testDegenerateABEqualC() {
+        assertEquals(TriangleType.NOT_A_TRIANGLE, App.classify(1, 2, 3));
+    }
+
+    @Test
+    @DisplayName("EC6b: a+c=b 退化三角形")
+    void testDegenerateACEqualB() {
+        assertEquals(TriangleType.NOT_A_TRIANGLE, App.classify(1, 3, 2));
+    }
+
+    @Test
+    @DisplayName("EC6c: b+c=a 退化三角形")
+    void testDegenerateBCEqualA() {
+        assertEquals(TriangleType.NOT_A_TRIANGLE, App.classify(3, 1, 2));
+    }
+
+    @Test
+    @DisplayName("EC7a: a+b<c 不满足三角不等式")
+    void testInequalityViolationC() {
+        assertEquals(TriangleType.NOT_A_TRIANGLE, App.classify(1, 2, 10));
+    }
+
+    @Test
+    @DisplayName("EC7b: a+c<b 不满足三角不等式")
+    void testInequalityViolationB() {
+        assertEquals(TriangleType.NOT_A_TRIANGLE, App.classify(1, 10, 2));
+    }
+
+    @Test
+    @DisplayName("EC7c: b+c<a 不满足三角不等式")
+    void testInequalityViolationA() {
+        assertEquals(TriangleType.NOT_A_TRIANGLE, App.classify(10, 1, 2));
+    }
+
+    @Test
+    @DisplayName("EC8: 极大整数值边界")
+    void testMaxIntOverflow() {
+        assertEquals(TriangleType.NOT_A_TRIANGLE, App.classify(Integer.MAX_VALUE, 1, 1));
+    }
+
+    // ========================================================================
+    // 边界值分析 补充测试用例
+    // ========================================================================
+    //
+    // 边界: 边长最小有效值 1, 以及三角不等式的临界点
+    //
+
+    @Test
+    @DisplayName("BV1: 最小等边三角形 (1,1,1)")
+    void testMinEquilateral() {
+        assertEquals(TriangleType.EQUILATERAL, App.classify(1, 1, 1));
+    }
+
+    @Test
+    @DisplayName("BV2: 最小等腰三角形 (1,1,2) -> 退化, 非三角形")
+    void testMinIsoscelesDegenerate() {
+        assertEquals(TriangleType.NOT_A_TRIANGLE, App.classify(1, 1, 2));
+    }
+
+    @Test
+    @DisplayName("BV3: 等腰三角形刚好满足不等式 (2,2,3)")
+    void testIsoscelesJustValid() {
+        assertEquals(TriangleType.ISOSCELES, App.classify(2, 2, 3));
+    }
+
+    @Test
+    @DisplayName("BV4: 一般三角形刚好满足不等式 (2,3,4)")
+    void testScaleneJustValid() {
+        assertEquals(TriangleType.SCALENE, App.classify(2, 3, 4));
+    }
+
+    @Test
+    @DisplayName("BV5: 一般三角形不等式临界 a+b=c+1 (3,4,6)")
+    void testScaleneBoundary() {
+        assertEquals(TriangleType.SCALENE, App.classify(3, 4, 6));
+    }
+
+    @Test
+    @DisplayName("BV6: 大等边三角形 (MAX,MAX,MAX)")
+    void testLargeEquilateral() {
+        assertEquals(TriangleType.EQUILATERAL, App.classify(Integer.MAX_VALUE, Integer.MAX_VALUE, Integer.MAX_VALUE));
+    }
+
+    @Test
+    @DisplayName("BV7: 三边全为0")
+    void testAllZero() {
+        assertEquals(TriangleType.NOT_A_TRIANGLE, App.classify(0, 0, 0));
+    }
+
+    @Test
+    @DisplayName("BV8: 三边全为负数")
+    void testAllNegative() {
+        assertEquals(TriangleType.NOT_A_TRIANGLE, App.classify(-1, -1, -1));
+    }
+
+    @Test
+    @DisplayName("BV9: 边长为1的一般三角形边界 (1,2,2) 等腰")
+    void testSmallIsosceles() {
+        assertEquals(TriangleType.ISOSCELES, App.classify(1, 2, 2));
+    }
+
+    @Test
+    @DisplayName("BV10: 大值等腰三角形溢出检测")
+    void testLargeIsoscelesOverflow() {
+        assertEquals(TriangleType.ISOSCELES, App.classify(Integer.MAX_VALUE, Integer.MAX_VALUE, 1));
+    }
+}

hw1/gradle.properties

@@ -0,0 +1,2 @@
+org.gradle.configuration-cache=true
+

hw1/gradle/libs.versions.toml

@@ -0,0 +1,7 @@
+[versions]
+guava = "33.4.6-jre"
+junit-jupiter = "5.12.1"
+
+[libraries]
+guava = { module = "com.google.guava:guava", version.ref = "guava" }
+junit-jupiter = { module = "org.junit.jupiter:junit-jupiter", version.ref = "junit-jupiter" }

hw1/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.0.0-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

hw1/gradlew

@@ -0,0 +1,251 @@
+#!/bin/sh
+
+#
+# Copyright © 2015 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH="\\\"\\\""
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

hw1/gradlew.bat

@@ -0,0 +1,94 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

hw1/settings.gradle

@@ -0,0 +1,6 @@
+plugins {
+    id 'org.gradle.toolchains.foojay-resolver-convention' version '1.0.0'
+}
+
+rootProject.name = 'triangle'
+include('app')