我有以下代码:
apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'
android {
compileSdkVersion 29
buildToolsVersion "29.0.2"
defaultConfig {
applicationId "com.locationtracker2019"
minSdkVersion 19
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
androidx.cardview.widget.CardView
implementation 'androidx.recyclerview:recyclerview:1.0.0'
implementation "com.google.firebase:firebase-database:10.2.0"
implementation "com.google.firebase:firebase-auth:10.2.0"
implementation "com.firebaseui:firebase-ui-auth:1.2.0"
implementation "com.firebaseui:firebase-ui-database:1.2.0"
implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
}
我想要功能FindShortest接受3D向量数组并返回最短的向量。每个向量都显示为包含3个元素(x,y和z)的数组。如果多个向量具有相同的长度,则该函数应返回其中任何一个。
要确定向量的长度,我使用以下公式:Math.sqrt x ^ 2 + y ^ 2 + z ^ 2
有人可以帮我吗?