Cartesian coordinates from degree angle in Java
The challenge
Write a simple function that takes polar coordinates (an angle in degrees and a radius) and returns the equivalent cartesian coordinates …
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In-depth guides, insights, and best practices for modern software engineering
Sort array by sorting its smallest sub-array in Java
The challenge
Given an array of integers, arr, find out 2 indices m, n(0<=m<=arr.length-1, 0<=n<=arr.length-1, m<=n), so that as long …
Read Article →Excessively Abundant Numbers in Java
The challenge
An abundant number or excessive number is a number for which the sum of its proper divisors is greater than the number itself.
The …
Read Article →Unique Substring From Joined Strings in Java
The challenge
Write a function that takes two strings, A and B, and returns the length of the longest possible substring that can be formed from the …
Read Article →Converting from Base 10 to 16 (Decimal to Hex) in Java
The challenge
Convert an integer which is base 10, to a hexadecimal base 16 string.
Java provides various built-in options such as Integer.toString(a, …
How to Format Numbers by Prepending 0 to single-digit numbers in Javascript
If you have a single-digit number, and you need to format it to always have at-least two digits, then you can use the below function to solve your …
Read Article →String polynomial converter in Java
The challenge
Your task is to programe:
String convertToString(int[] pol) {....} The method returns given by a parameter, (integer array) which …
How to Remove all Exclamation Marks from a String in Java
The challenge
Write function RemoveExclamationMarks which removes all exclamation marks from a given string.
The solution in Java code
Option 1:
class …How to Convert a Number to a String in Java
The challenge
We need a function that can transform a number into a string.
What ways of achieving this do you know?
Examples: …
Read Article →How to Remove Spaces in a String in Java
The challenge
Simple, remove the spaces from the string, then return the resultant string.
The solution in Java code
class Solution {
static …How many stairs will Suzuki climb in 20 years? in Java
The challenge
Suzuki is a monk who climbs a large staircase to the monastery as part of a ritual. Some days he climbs more stairs than others …
Read Article →Determine if N is divisible by X and Y in Java
The challenge
Create a function that checks if a number n is divisible by two numbers x AND y. All inputs are positive, non-zero digits.
Examples
1) n …