java

[Solved] How to remove dash (-) from string excluding a number from input alphanumeric string in Java

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Simple fragment that will also handle the other dashes. public class Test { public static void main(String[] args) { printFormattedText(“-Hello-World. My 123-phone number-456 is 333-333-333”); printFormattedText(“-123 Hello-World. My 123-phone number-456 is 333-aaa-333-“); } private static void printFormattedText(String input) { String result = input.replaceAll(“^\\-|(\\D)\\-|\\-(\\D)|\\-$”, “$1 $2”); System.out.println(result); } } Output: Hello World. My 123 phone number … Read more

[Solved] Java Regular expression for money

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Currency amount US & EU (cents optional) Can use US-style 123,456.78 notation and European-style 123.456,78 notation. Optional thousands separators; optional two-digit fraction Match; JGsoft: ^[+-]?[0-9]{1,3}(?:[0-9]*(?:[.,][0-9]{2})?|(?:,[0-9]{3})*(?:\.[0-9]{2})?|(?:\.[0-9]{3})*(?:,[0-9]{2})?)$ Reference: here 2 solved Java Regular expression for money

[Solved] Object and Classes: Finding balance ,annual interest rate, monthly interest rate, withdrawing, depositing [closed]

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Your current issue is that you didn’t use camelCasedNames when you defined the annualInterestRate field, so it doesn’t exist! It’s currently named annualinterestrate instead (note there are no caps!). You ought to rename it to match what you’re using elsewhere. Also, that field in particular has another problem, which is that you’ve declared it final. … Read more

[Solved] Post increment JAVA

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for(i=0;i<=100;i++) This will do i = 0 -> i = 100, which 101 iterations. If you want only 100 iterations exactly, you’d need either of these: for (i = 0; i < 100; i++) // note: < only: 0 -> 99 = 100 iterations. for (i = 1; i <= 100; i++) // note: change … Read more

[Solved] How to traverse java maze using stacks

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First of all, you should be initializing your mazePoints array with the static ints you declared: public static char[][] mazePoints = new char[mazeHeight][mazeWidth]; But you’ll need to mark them static first: private static final int mazeHeight = 12; private static final int mazeWidth = 58; If they aren’t meant to be static, then neither should … Read more

[Solved] Optimizing a while loop in Java

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Your code is pretty fast (O(n)), but this problem can be solved in constant time (O(1)), since it is just based on the condition of the intersection of two lines being an integer. static String kangaroo(int k1, int v1, int k2, int v2) { float x = (k2 – k1)/(v1 – v2); if(x == (int) … Read more

[Solved] How to check whether empty or not every element of Varargs by recursive in Java?

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private boolean isNotEmptyOrNull(List list) { return list != null && !list.isEmpty() ? true : false; } private boolean orObjects(List… args) { if (args.length == 0) return false; return isNotEmptyOrNull(args[0]) ? true : orObjects(Arrays.copyOfRange(args, 1, args.length)); } solved How to check whether empty or not every element of Varargs by recursive in Java?

[Solved] How to increment alphanumeric number in android? [closed]

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You can’t increment alphanumeric values directly. if want to do so you need to write some lines of code for it here is activity_main.xml <LinearLayout xmlns:android=”http://schemas.android.com/apk/res/android” xmlns:app=”http://schemas.android.com/apk/res-auto” xmlns:tools=”http://schemas.android.com/tools” android:layout_width=”match_parent” android:layout_height=”match_parent” tools:context=”.MainActivity” android:orientation=”vertical”> <TextView android:id=”@+id/txt_autoincreament” android:layout_width=”wrap_content” android:layout_height=”wrap_content” android:text=”Hello World!” app:layout_constraintBottom_toBottomOf=”parent” app:layout_constraintLeft_toLeftOf=”parent” app:layout_constraintRight_toRightOf=”parent” app:layout_constraintTop_toTopOf=”parent” /> <Button android:layout_width=”match_parent” android:layout_height=”wrap_content” android:text=”click” android:onClick=”Click”/> </LinearLayout> here is MainActivity.java public class MainActivity … Read more

[Solved] Loop not ending

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The while loop will continue as long as temp is true. In the nested if-statement we set temp as false which exits the loop. As for the playerPick: the variable is declared outside of the loop so It should be accessible anywhere within the function that is below the declaration (code is read top down … Read more