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#!/bin/bash

# Check for root
if [[ "$(id -u)" == "0" ]]
then
  echo "$fail Do not run this script as root."
  exit 1
fi

disableColor=""

if [[ $disableColor == "" ]] || [[ $disableColor == false ]]
then
  fail="[$(tput setaf 1) FAIL $(tput sgr0)]"
  ok="[$(tput setaf 2)  OK  $(tput sgr0)]"
  running="[$(tput setaf 3)  **  $(tput sgr0)]"
  notice="[$(tput setaf 3)NOTICE$(tput sgr0)]"
  warn="[$(tput setaf 3) WARN $(tput sgr0)]"
  info="[$(tput setaf 6) INFO $(tput sgr0)]"
  finish="[$(tput setaf 4) DONE $(tput sgr0)]"
elif [[ $disableColor == true ]]
then
  fail="[ FAIL ]"
  ok="[  OK  ]"
  running="[  **  ]"
  notice="[NOTICE]"
  warn="[ WARN ]"
  info="[ INFO ]"
  finish="[ DONE ]"
else
  echo "Unknown disableColor setting."
  exit 1
fi

echo "$fail this is fail."
echo "$ok this is OK."
echo "$running this is running."
echo "$notice this is notice."
echo "$warn this is warn."
echo "$info this is info."
echo "$finish this is finish."

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##1. 进入screen，

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screen

##2. 列出所有id的session

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screen - ls

##3. 切换到某id的session

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screen -r (id)

##4. 新建某id的session

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screen -S id

##5. 杀死某个id的session

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screen -S id -X quit

##6. 切换出screen
ctrl+a+d

##7. 切换到下一个id的session
ctrl+a+n

改session名字

ctrl+A
:sessionname newname

在screen的session内，ctrl+a+:,可键入命令

escape ^Bb

临时改变主键为B

永久改变，则仅需新建$HOME/.screenrc即可

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escape ^Bb

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"""
https://leetcode.com/problems/plus-one/description/
"""


class Solution(object):
    def plusOne(self, digits):
        """
        :type digits: List[int]
        :rtype: List[int]
        >>> s = Solution()
        >>> s.plusOne([1, 2, 3])
        [1, 2, 4]
        >>> s.plusOne([4, 3, 2 ,1])
        [4, 3, 2, 2]
        >>> s.plusOne([1, 9, 9])
        [2, 0, 0]
        >>> s.plusOne([9, 9, 9])
        [1, 0, 0, 0]
        """
        if digits == [0]:
            return [1]
        idx = len(digits) - 1
        while True:
            digits[idx] += 1
            if digits[idx] != 10:
                return digits
            else:
                digits[idx] = 0
                idx -= 1
                if idx == -1:
                    return [1] + digits

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"""
https://leetcode.com/problems/valid-number/description/
"""


class Solution(object):
    def isNumber(self, s):
        """
        :type s: str
        :rtype: bool
        """
        try:
            float(s.strip())
            return True
        except Exception:
            return False

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"""
https://leetcode.com/problems/sqrtx/description/
"""


class Solution(object):
    def mySqrt(self, x):
        """
        :type x: int
        :rtype: int
        >>> s = Solution()
        >>> s.mySqrt(4)
        2
        >>> s.mySqrt(0)
        0
        >>> s.mySqrt(8)
        2
        >>> s.mySqrt(1)
        1
        >>> s.mySqrt(2147395600)
        46340
        """
        if 0 <= x < 1:
            return 0
        elif x == 1:
            return 1
        else:
            # how to choose the init value ?
            x0 = x // 2
            while True:
                # x**2/4 > x
                if x0**2 <= x:
                    return x0
                x0 = int((x0 + x / x0) / 2)