package main

import (
	"fmt"
	"math"
	"strconv"
)

func main(){
	a := []int{1,2,3}
	//b := []int{4,4,4}
	b := make([]int,3)
	copy(b,a)
	test(b)
	fmt.Println(b)
	s := "({{[wqeyqebA"
	for _, value := range s {
		//println(value)
		if value == 's' {

		}
		//println(string(value))
	}
	c := 'B'-1
	e := math.Pow(2,3)
	//println(string(s[2]))
	fmt.Println("======",'A','B',c,e)

	f,err :=strconv.ParseFloat("2d2",64)
	if err != nil {
		fmt.Println("--wwdd",err)
	}
	fmt.Println("--dd",f)
	//w :=titleToNumber("ABC")
	//fmt.Println("================",w)
	res := []string{"ffffffflowwew","ffffffflsrrww","ffffffflswee"}
	t :=longestCommonPrefix(res)
	fmt.Println(t)

}

func test(a []int){
	b := a
	b[1]= 1

}


func titleToNumber(columnTitle string) int {
	l := len(columnTitle)
	if l == 0 {
		return 0
	}
	res := 0
	for i:= 0;i<l;i++{
		m := int(math.Pow(26,float64(l-i-1)))
		println(m)

		res = res + int(columnTitle[i]-64)*m
	}

	return res
}

func longestCommonPrefix(strs []string) string {
	res := ""
	for i:=0;i<=200;i++{
		var tem byte
		ist := true
		for k,str := range strs{


			if len(str)<i-1{
				return res
			}
			if k == 0{
				if len(str) == 0{
					return ""
				}
				if len(str)<i-1{
					return res
				}
				tem = str[i]
			}
			if str[i] != tem{
				ist = false
			}

		}
		if ist{
			res = res +string(tem)
		}else {
			return res
		}

	}
	return res

}