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Suppose we have a binary search tree and a target value; we have to find k values in that BST that are closest to the target. We have to keep in mind that the target value is a floating-point number. We can assume k is always valid, and k ≤ total nodes.So, if the input is liketarget = 3.714286, and k = 2, then the output will be [4, 3]To solve this, we will follow these steps −Define a function pushSmaller(), this will take node, stack st, and target, while node is not present, do −if val of node < ... Read More
This example demonstrates how to detect if a user is using an Android tablet or a phone using Kotlin.Step 1 − Create a new project in Android Studio, go to File? New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.Example Step 3 − Add the following code to src/MainActivity.ktimport android.content.Context import android.os.Bundle import android.telephony.TelephonyManager import android.widget.Toast import androidx.appcompat.app.AppCompatActivity import java.util.* class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) title = "KotlinApp" ... Read More
This example demonstrates how to change the font face of Webview in Android using Kotlin.Step 1 − Create a new project in Android Studio, go to File? New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.Example Step 3 − Create an assets folder. Right click asset folder >> Create a new file (webView.html) and the following code − WebView9 @font-face { font-family: 'Font'; src:url("file:///android_asset/Font.otf") } body { font-family: 'Font', serif; font-size: medium; text-align: justify; color:#ffffff } ... Read More
Suppose there is a new alien language and that uses the latin alphabet. However, the order among letters are not known. We have a list of non-empty words from the dictionary, these words are sorted lexicographically by the rules of this new language. we have to find the order of letters in this language.So, if the input is like ["wrt", "wrf", "er", "ett", "rftt" ], then the output will be "wertf"To solve this, we will follow these steps −Define one map called degreeDefine one map called graphn := size of wordsfor initialize i := 0, when i < size of ... Read More
Suppose we have n houses in a row, now each house can be painted with one of the k colors. The painting cost of each house with a certain color is different. Now we have to keep in mind that we have to paint all the houses such that no two adjacent houses have the same color.The cost of painting each house with a certain color is represented by a matrix of order n x k. And we have to find the minimum cost to paint all houses.So, if the input is like153294then the output will be 5, as paint ... Read More
Suppose we want to define a function to count the total strobogrammatic numbers that exist in the range of (low and high). As we know that a strobogrammatic number is a number that looks the same when rotated 180 degrees.So, if the input is like low = "50", high = "100", then the output will be 3 as there are three results, 69, 88, and 96.To solve this, we will follow these steps −Define a function findStrobogrammatic(), this will take n, Define an array retif n & 1 is non-zero, then −insert "0" at the end of retinsert "1" at ... Read More
This example demonstrates how to change the language of an app when the user selects language using Kotlin.Step 1 − Create a new project in Android Studio, go to File ? New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.Example Step 3 − Add the following code to src/MainActivity.ktimport android.content.Intent import android.os.Bundle import android.view.View import android.widget.AdapterView import android.widget.AdapterView.OnItemSelectedListener import android.widget.ArrayAdapter import android.widget.Spinner import android.widget.Toast import androidx.appcompat.app.AppCompatActivity import java.util.* import kotlin.system.exitProcess @Suppress("DEPRECATION") class MainActivity : AppCompatActivity() { lateinit var spinner: Spinner lateinit var locale: ... Read More
The call(), apply() and bind() are used to borrow methods in JavaScript.Following is the code for borrowing methods in JavaScript −Example Live Demo Document body { font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; } .result, .sample { font-size: 18px; font-weight: 500; color: rebeccapurple; } .result { color: red; } Borrowing a method in JavaScript CLICK HERE Click on the above button to borrow the welcome method of object obj ... Read More
Following is the code to transform JavaScript arrays using maps.Example Live Demo Document body { font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; } .result,.sample { font-size: 18px; font-weight: 500; color: rebeccapurple; } .result { color: red; } Transform JavaScript arrays using maps [22,33,44,55] CLICK HERE Click on the above button to square each element of the above array let resEle = document.querySelector(".result"); let BtnEle = document.querySelector(".Btn"); let arr = [22, 33, 44, 55]; BtnEle.addEventListener("click", () => { resEle.innerHTML = arr.map((a) => a * a); }); OutputThe above code will produce the following output −On clicking the ‘CLICK HERE’ button −
Following is the code to de-structure already declared variables in JavaScript −Example Live Demo Document body { font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; } .result { font-size: 18px; font-weight: 500; color: rebeccapurple; } De-structure to already-declared variables CLICK HERE Click on the above button to destructure the personObj object let resEle = document.querySelector(".result"); let BtnEle = document.querySelector(".Btn"); let name, age, personObj; personObj = { name: "Rohan", age: 19, }; BtnEle.addEventListener("click", () => { ({ name, age } = personObj); resEle.innerHTML = " name = " + name + "age = " + age; }); OutputThe above code will produce the following output −On clicking the ‘CLICK HERE’ button −