package com.mixsmart.utils;


import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * @author yangyj
 * @Date 2022/7/14 15:55
 * @description TODO
 */
public class FormulaUtils {
    public static Map<String,Object> triangleSquare(Object ranges){
        Map<String,Object> map =new HashMap<>();
        if(StringUtils.isEmpty(ranges)){
            //z的默认取值范围
            ranges="(0,15)";
        }
        Matcher m = RegexUtils.matcher("[\\(||\\[](\\d*)(\\D)(\\d*)[\\)||\\]]",ranges.toString());
        m.find();
        Random rm = new Random();
        int min = StringUtils.handObj2Integer(m.group(1));
        int max = StringUtils.handObj2Integer(m.group(3));
        Integer[] r= pythagorean(min,max);
        map.put("X",String.valueOf(r[0]));
        map.put("Y",String.valueOf(r[1]));
        map.put("Z", String.valueOf(r[2]));
        return map;
    }

    /**
     * result[0]^2+result[1]^2=result[2]^2  result[] 元素均为正整数
     */
    public static Integer[] pythagorean(Integer min,Integer max){
        Integer[] result = null;
        List<Integer[]> list = new ArrayList<>();
        for(int i=1;i<=max;i++){
            for(int j=1;j<=max;j++){
                double tmp = Math.sqrt(Math.pow(i,2)+Math.pow(j,2));
                int z= (int) Math.round(tmp);

                if(min<z&&z<=max){
                    Integer[] arr = new Integer[]{ i,j,z};
                    list.add(arr);
                }
            }
        }
        if(ListUtils.isNotEmpty(list)){
            Random rm = new Random();
            result = list.get(rm.nextInt(list.size()));
        }
        return result;
    }



}