Freaks City

A Problem: You need to stay for (n) consecutive days. The pricing is (x) yuan per night for the first (k) days, and (y) yuan per night thereafter. What is the total cost? Solution: (min(k, n) \cdot x + max(n - k, 0) \cdot y) B Problem: Given a string (s), determine if it is "beautiful". A string is beautiful if every lowercase charac ...

Objects What is an Object? In real life, everything can be considered an object—a concrete entity that is tangible and visible, such as a book, a car, or a person. Similarly, in programming, a database, a web page, or a connection to a remote server can also be regarded as an object. In JavaScript, an object is an unordered collection of relate ...

Mathematical and System-Level Operations The java.lang.Math class provides immutable static methods for basic numerical computations. Since all members are static, invocation occurs via the class name. Key utilities include absolute value calculation, ceiling/floor rounding, maximum/minimum selection, exponentiation, and pseudo-random number ge ...

A – Two Rectangles [Max Area Logic] Given the dimensions of two rectangles: Rectangle 1: (A \times B) Rectangle 2: (C \times D) Determine and output the larger area. Tie-breaking is irrelevant. i64 a, b, c, d; std::cin >> a >> b >> c >> d; i64 r1 = a * b, r2 = c * d; i64 best = (r1 >= r2) ? r1 : r2; std::cout <&l ...

Mathematical Operations in Java The Math Class The Math class in Java provides various mathematical functions and constants. Here are some practical examples: package com.example.math; public class MathOperations { public static void main(String[] args) { // Mathematical constants System.out.println("Value of PI: &quot ...

The Math class in Java provides fundamental mathematical functions and constants. As part of the java.lang package, it requires no explicit import. Key Functionalities: Mathematical constants like PI and E Basic operations: square roots, exponents, absolute values Trigonometric and logarithmic functions Example Usage: double circleRadius = 7. ...

Problem Overview Given a positive integer array nums and m queries, each query asks for the minimum number of operations to transform all elements in nums to a target value q. One operation allows incrementing or decrementing a single element by 1. The array resets to its original state after each query. Solution Approach For each target value, ...

String Object The String object in JavaScript provides various methods for manipulating text strings. Here are some commonly used properties and methods: // length property const text1 = "helloWorld"; document.write(text1.length); document.write("<br></br>"); // bold(): makes text bold const text2 = "import ...

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 ...

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 ...