# DRUNKWATER TEMPLATE(add description and prototypes)
# Question Title and Description on leetcode.com
# Function Declaration and Function Prototypes on leetcode.com
#393. UTF-8 Validation
#A character in UTF8 can be from 1 to 4 bytes long, subjected to the following rules:
#For 1-byte character, the first bit is a 0, followed by its unicode code.
#For n-bytes character, the first n-bits are all one's, the n+1 bit is 0, followed by n-1 bytes with most significant 2 bits being 10.
#This is how the UTF-8 encoding would work:
#   Char. number range  |        UTF-8 octet sequence
#      (hexadecimal)    |              (binary)
#   --------------------+---------------------------------------------
#   0000 0000-0000 007F | 0xxxxxxx
#   0000 0080-0000 07FF | 110xxxxx 10xxxxxx
#   0000 0800-0000 FFFF | 1110xxxx 10xxxxxx 10xxxxxx
#   0001 0000-0010 FFFF | 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
#Given an array of integers representing the data, return whether it is a valid utf-8 encoding.
#Note:
#The input is an array of integers. Only the least significant 8 bits of each integer is used to store the data. This means each integer represents only 1 byte of data.
#Example 1:
#data = [197, 130, 1], which represents the octet sequence: 11000101 10000010 00000001.
#Return true.
#It is a valid utf-8 encoding for a 2-bytes character followed by a 1-byte character.
#Example 2:
#data = [235, 140, 4], which represented the octet sequence: 11101011 10001100 00000100.
#Return false.
#The first 3 bits are all one's and the 4th bit is 0 means it is a 3-bytes character.
#The next byte is a continuation byte which starts with 10 and that's correct.
#But the second continuation byte does not start with 10, so it is invalid.
## @param {Integer[]} data
## @return {Boolean}
#def valid_utf8(data)
#end



# Time Is Money