tlylt

#first
#- write recursive solution
coins = [50, 20, 10, 5, 1]
count =0
count2 = 0
def cc(a,d):
    global count
    count+=1
    if a <0 or d == 0:
        return 0

tlylt

Use % 100 to get the last two digits of a number
--- 430 % 100 => 30 
Use // 100 to get the first digit of a number
--- 430 //100 => 4
Use % 10 to get the last digit of a number
--- 430 % 10 => 0
Conclusion
- Use //10 to get from the left
  //10, remove 1 digit from right
  //100, remove 2 digits from right

tlylt

# Number of Combinations = 2**(length of input set)
# Makes use of binary
def PowerSet(input):
  ans = []
  numOfComb = 2 ** len(input)
  for combidx in range(numOfComb): # 0 -> numOfComb
    temp = []
    for setidx in range(len(input)): # 0 -> len(input)
      if combidx & 1 << setidx: # bitwise operation e.g. 0 & 1 << 0 =>0
        temp.append(input[setidx])

tlylt

# You probably need to set a size that is way larger than expected file size,
# if not you still may receive this 413 Request entity too large error
server {
    client_max_body_size 100M;
    ...
}

tlylt

def read_csv(filename):  # provided
    with open(filename, 'r') as f:
        lines = csv.reader(f, delimiter=',')
        return tuple(lines)

tlylt

def make_datetime(string):  # provided
    string = string.split(' ')
    date_str = string[0].split('/')
    time_str = string[1].split(':')
    date_int = [int(x) for x in date_str]
    time_int = [int(x) for x in time_str]
    return datetime.datetime(date_int[2], date_int[1], date_int[0], time_int[0], time_int[1])

tlylt

# create virtual environment in this folder called env
python -m venv env
# activate it
env\Scripts\activate.bat

tlylt

https://serverfault.com/questions/110154/whats-the-default-superuser-username-password-for-postgres-after-a-new-install
In Windows, do the following (IMPORTANT: Use a Windows administrator account):

After installation, open <PostgreSQL PATH>\data\pg_hba.conf.

Modify these two lines, and change "md5" to "trust":

host    all             all             127.0.0.1/32            md5

host    all             all             ::1/128                 md5

tlylt

# remove local branch
git branch -d branchname

tlylt

https://www.makeareadme.com/
# Foobar

Foobar is a Python library for dealing with word pluralization.

## Installation

Use the package manager [pip](https://pip.pypa.io/en/stable/) to install foobar.

```bash