[Solved] What does !type mean in this code?

[ad_1] Type is an instance of the String object, it has the method String#equals(…) and that method returns a boolean… “!” this is the negation opeator and inverts any boolean value… so !type.equals(“auto”) is a boolean condition as result from comparing whether the String var with the name type has the value “auto” . [ad_2] … Read more

[Solved] Error in using rand function [closed]

[ad_1] The solution you look for is rand() % 7 + 4 which will give you results from range [4, 10]. More general, for given min and max to obtain random value from [min, max] you go for rand() % (max – min + 1) + min 1 [ad_2] solved Error in using rand function … Read more

[Solved] Difference between ‘is’ and ‘==’ in C#

[ad_1] They check completely different things. is compares types. == compares values. var isString = “Abc” is String; // => true var equalToString = “Abc” == String; // Error: `string’ is a `type’ but a `variable’ was expected There is one domain where these can both apply, and have different meanings, and that’s in type … Read more

[Solved] Activity not reading intent from other class in Android SDK

[ad_1] You need to define that constant in MainActivity as public static final String EXTRA_MESSAGE = “extra_message”; so that in DisplayMessageActivity you can access that static constant as String message = intent.getStringExtra(MainActivity.EXTRA_MESSAGE); MainActivity public class MainActivity extends AppCompatActivity { public static final String EXTRA_MESSAGE = “extra_message”; // static : accessed by class name // final … Read more

[Solved] Check if the first chars are digits

[ad_1] How can I remove every digit at the beginning? Linq SkipWhile would be one way string result = string.Concat(“1234ABC123”.SkipWhile(char.IsDigit)); // “ABC123” [ad_2] solved Check if the first chars are digits

[Solved] time complexity of recursion function

[ad_1] We have: 1 : if statement 3 : * operator 3 : function statement Totally: 7 So we have: T(n)=t(n-1) + t(n-2) + t(n-3) + 7 T(99)=1 T(98)=1 … T(1)=1 Then to reduce T(n), we have T(n-3)<T(n-2)<T(n-1) therefore: T(n) <= T(n-1)+T(n-1)+T(n-1) + 7 T(n) <= 3T(n-1) + 7 So we can solve T(n) = … Read more

[Solved] Delegation in C++

[ad_1] First, let’s use a typedef for the function: typedef int agechanger(int); this makes a new type, agechanger, which will be used in code for passing the function instances around. Now, you should give your person class a proper constructor, and properly incapsulate the age field providing a public getter. Then add a method that … Read more

[Solved] Java Read Input String and Display with space

[ad_1] 1. Thanks a lot for all your support guys 2. Finally I found the solution. ———- package demo.practice.java; import java.util.Scanner; public class Demo { public static void main(String[] args) { System.out.println(“Enter String”); Scanner sc=new Scanner(System.in); String input=sc.nextLine(); //split into words String[] words = input.split(“(?=[A-Z])”); words[0] = capitalizeFirstLetter(words[0]); //join StringBuilder builder = new StringBuilder(); for … Read more