games

class Manipulate2d {
  CanvasElement _canvas;
  RenderingContext _gl;
  int _positionAttri, _translationAttri, _rotationAttri, _scaleAttri;
  Buffer _vertexBuffer, _translationBuffer, _rotationBuffer, _scaleBuffer, _indicesBuffer;
  UniformLocation _resolutionUniform;
  
  Manipulate2d(c) {
    _canvas = c;
    _gl = _canvas.getContext3d(preserveDrawingBuffer: true);

games

using System;
using System.Collections.Generic;
using System.Linq;
using System.Numerics;
using System.Text;
using System.Threading.Tasks;

namespace mathexpression {

    interface Term {

games

module M4 =
    type Result<'Success, 'Failure> =
    | Success of 'Success
    | Failure of 'Failure

    type Request = {Name: string; Password: string; NewName: string}

    let Process request =
        match request with
        | {Name = ""} -> Failure "Name must not be blank"

games

题目一：
给你一个数学表达式，字符串形式的，只有简单的+-*/操作符，你计算出这个数学表达式的结果
input> "10*2-(2+5)"
output> 10

题目二：
把上面的程序改成可以支持S表达式
input>  (- (* 10 2) (+ 2 5))
output> 10

games

create a robot, it can handle commands as below;
"L" -> turn left
"R" -> turn right
"M" -> forward
"B" -> back

place it on a 2D map(x*y), and pass commands "LLRRLLMMBRL" to this robot, then the robot will move to the target place

example:

games

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace ConsoleApplication1 {

    class Test {

games

module test

open NUnit.Framework
open FsUnit
open System


let min (a: int) (b: int) (c: int) = 
    Math.Min(a, Math.Min(b, c))

games

let pick items weight = 
    let rec pick based =
        function
        | [] -> None
        | (w, _) as h :: _ when weight <= w + based -> Some h
        | (w, _) :: t -> pick (based + w) t
    pick 0.0 items

games

module mytest
open System
open NUnit.Framework


let seq (l: int list) =
    let rec helper (acc: int list) (rest: int list) = 
        match acc, rest with
        | [], a :: b -> helper [a] b
        | _, [] -> acc

games

#include <iostream>

// { 1  2  3  4 }
// { 5  6  7  8 }
// { 9 10 11 12 }
// {13 14 15 16 }
//
// 4
// 3 8
// 2 7 12