Minimum Absolute Difference and Related Problems
Given a array of distinct integers, find all pairs with the smallest absolute difference and return them in ascending order.
function findMinAbsDifference(arr) {
let result = [];
arr.sort((a, b) => a - b);
let minDiff = Infinity;
for (let i = 0; i < arr.length - 1; i++) {
let diff = arr[i + 1] - arr[i];
if ...
Posted on Thu, 21 May 2026 21:02:42 +0000 by philhale
Optimizing Minimum Perfect Square Sum with Dynamic Programming
Problem Statement
Given a positive integer n, determine the smallest number of perfect squares that sum to n. A perfect square is an integer equal to the square of another integer — for example, 1, 4, 9, and 16 are perfect squares; 3 and 11 are not.
Naive Recursiev Approach
A top-down recursive solution defines minSquares(x) as the minimum coun ...
Posted on Sun, 17 May 2026 15:42:01 +0000 by neonorange79
Preliminary solutions for AtCoder Beginner Contest 064
Problem A: Check multiples of 4
Given three digits a, b, c (most significant first), form the three-digit number n = 100*a + 10*b + c. Determine whether n is divisible by 4.
int a, b, c; cin >> a >> b >> c;
int n = a * 100 + b * 10 + c;
cout << (n % 4 == 0 ? "YES" : "NO") << "\n";
Pro ...
Posted on Mon, 11 May 2026 07:02:20 +0000 by lostsoul111455
JavaScript Random Number Generation and Numeric Parsing Techniques
Core Math Methods for Randomization
The Math object provides several essential functions for handling numerical operations, particularly when dealing with randomness and rounding.
Math.ceil(x): Rounds a number upward to the nearest integer.
Math.floor(x): Rounds a number downward to the nearest integer.
Math.round(x): Rounds a number to the ne ...
Posted on Mon, 11 May 2026 03:19:08 +0000 by Smicks
Implementing Mathematical Formulas in Java
Java supports mathematical computations through built-in operators and the Math class, enabling developers to implement formulas directly in code.
For basic algebraic expressions, standard arithmetic operators (+, -, *, /) combined with methods like Math.pow() suffice. Consider the quadratic expression ( y = x^2 + 2x + 1 ):
public class Quadrat ...
Posted on Sun, 10 May 2026 11:31:06 +0000 by krispykreme