lezeroq profile - python coding challenges

one-liner

All the Same

lambda

1

66

6

10 seconds coding

Count Digits

isdigit

sum

comprehension

int

str

8

4

First

Max Digit

map

set

max

int

str

1

one line: min + key + abs

Nearest Value

min

abs

set

lambda

int

First

Backward String

str

First

Beginning Zeros

lstrip

int

str

len

First

All Upper I

ascii_lowercase

string.ascii_lowercase

string

bool

set

First

Replace First

typing.Iterable

Iterable

typing

list

First

Acceptable Password I

bool

str

len

First

Number Length

int

str

len

one-line (slice, negative index, unpack)

Easy Unpack

lambda

1

one-line (max with key arg)

The Most Frequent

max

lambda

count

First

Split Pairs

format

list-comp

range

comprehension

len

First

Remove All Before

index

typing.Iterable

Iterable

typing

inline-if

First

End Zeros

rstrip

int

str

len

First

Sum Numbers

all

isdigit

sum

if-comprehension

and

First

First Word (simplified)

split

str

First

Is Even

bool

not

int

First

Correct Sentence

upper

inline-if

str

First

Between Markers (simplified)

index

str

First

Multiply (Intro)

One line sum any

Pawn Brotherhood

chr

any

ord

sum

join

13

7

one line (regexp)

Three Words

r-string

bool

lambda

2

Lazy

Morse Decoder

capitalize

get

map

replace

join

3

one line with: sorted, key, count, index

Sort Array by Element Frequency

index

lambda

count

sorted

straightforward

Sun Angle

typing.Union

Union

float

format

map

3

1

find + slice

Between Markers

find

None

inline-if

in

str

2

straightforward

Split List

list

len

Find

Second Index

find

None

inline-if

str

2

Not smart

Date and Time Converter

calendar.month_name

month_name

calendar

format

map

one line

Days Between

abs

lambda

2

re

First Word

findall

re.findall

r-string

re

str

1

straightforward

Backward Each Word

join

split

comprehension

str

First

Non-unique Elements

collections.Counter

Counter

collections

if-comprehension

list-comp

one line (sorted + key)

Bigger Price

lambda

sorted

True

one line

Right to Left

replace

lambda

join

comprehension

one line

Even the Last

lambda

inline-if

sum

Linear

Words Order

setdefault

get

enumerate

bool

False

9

3

Less crazy math (second)

Brackets

ord

not

in

False

else

3

2

Functional way

Find Sequence

operator.or_

or_

chain

itertools.chain

operator

Functional way Second

Find Sequence

chain

itertools.chain

re.search

search

r-string

Crazy math (crazy complexity O(2^n))

Brackets

values

get

pop

not

or

1

First

Sort by Extension

rfind

List

typing.List

typing

sorted

5

First

Acceptable Password V

map

bool

set

lower

or

First

Acceptable Password VI

map

bool

set

lower

or

First

Acceptable Password IV

map

bool

set

or

and

First

Surjection Strings

zip

in

False

and

True

First

Acceptable Password III

map

bool

set

and

range

First

Acceptable Password II

map

bool

set

and

range

2

1

lambda

Boolean Algebra

get

lambda

2

First

Ascending List

any

typing.Iterable

Iterable

bool

not

1

oneline

Verify Anagrams

replace

lower

lambda

sorted

list-comp

3

straightforward

All Upper II

ascii_uppercase

string.ascii_uppercase

string

isupper

bool

one line

Digits Multiplication

replace

lambda

int

str

2

one line (lambda)(lambda)

Common Words

set

lower

lambda

sorted

join

1

Dumb

Convert and Aggregate

collections.defaultdict

defaultdict

dict-comp

dict

items

RegExp (just for fun)

Striped Words

IGNORECASE

re.IGNORECASE

findall

re.findall

r-string

Dumb

YAML. More Types

f-string

strip

continue

None

replace

std lib

Remove Accents

category

unicodedata.category

normalize

unicodedata.normalize

unicodedata

one line

Secret Message

isupper

lambda

join

if-comprehension

comprehension

6

First

YAML. Simple Dict

continue

isdigit

split

int

for

one line (dumb)

Absolute Sorting

abs

lambda

sorted

4

Dumb

The Hidden Word

itertools.zip_longest

zip_longest

itertools

find

enumerate

one line

Pangram

all

lower

lambda

count

comprehension

1

First

I Love Python!

replace

first

Letter Queue

collections.deque

deque

collections

join

in

First

Goes Right After

find

bool

False

and

str

First

Time Converter (24h to 12h)

f-string

map

split

int

str

fast

The Most Wanted Letter

ascii_lowercase

string.ascii_lowercase

collections.Counter

Counter

string

Itertools.chain zip and count

Xs and Os Referee

chain

itertools.chain

itertools

zip

count

4

19

4

one line

Count Inversions

enumerate

lambda

sum

and

list

First

The Flat Dictionary

isinstance

dict

items

pop

or

Strings and eval

Flatten a List

repr

eval

replace

One line brute force

Loading Cargo

combinations

itertools.combinations

itertools

map

min

First

Median

inline-if

sorted

len

one line

Index Power

pow

get

dict

enumerate

lambda

square programming 8x60

Building Base

type

get

dict

zip

map

11

3

It's getting messy

The Healers

class

collections.deque

deque

property

super

Uber mess

The Warlords

class

Optional

typing.Optional

collections.deque

deque

Just dumb

The Weapons

class

Optional

typing.Optional

collections.deque

deque

Dumb

Straight Fight

class

Optional

typing.Optional

collections.deque

deque

First

Geometry Figures

class

math.pi

pi

math.sqrt

sqrt

Mutable list argument

Capital City

class

is

None

if

Lots of code

Army Units

class

f-string

str

Dumb one

The Lancers

class

collections.deque

deque

property

super

dumb

Voice TV Control

class

isinstance

any

max

inline-if

First

Every Person is Unique

class

datetime.strptime

strptime

f-string

datetime.datetime

First

3 Chefs

class

f-string

ordinary solution

The Vampires

class

collections.deque

deque

property

super

dumb frozenset.union and try finally

Friends

finally

class

discard

frozenset

union

Straightforward

Army Battles

class

collections.deque

deque

property

super

Dummy

The Warriors

class

property

super

decorator

not

One line with slice

Moore Neighbourhood

max

sum

comprehension

12

1

Easy solution (fixed version)

The Greatest Common Divisor

functools.reduce

reduce

functools

lambda

or

std lib

The Greatest Common Divisor

fractions.gcd

gcd

fractions

functools.reduce

reduce

one line (max + key)

Best Stock

items

max

lambda

oneline

Fizz Buzz

all

not

lambda

inline-if

join

1

one line

Binary Count

bin

lambda

count

dp O(price * len(denominations))

Making Change

None

inline-if

and

range

for

1

5

stupid recursion

Making Change

functools.lru_cache

lru_cache

decorator

functools

None

13

4

LoL(N) complexity

Largest Rectangle in a Histogram

pop

max

or

while

and

dumb solution

Feed Pigeons

min

while

7

1

breadth first search

How to Find Friends

collections.deque

deque

collections.defaultdict

defaultdict

extend

5

First

Roman Numerals

range

int

len

for

itertools.groupby

Long Repeat

groupby

itertools.groupby

itertools

max

comprehension

1

one line

The Most Numbers

min

max

lambda

inline-if

2

one line

Monkey Typing

lower

lambda

sum

in

comprehension

Bit manipulation with comments

IP Network: Route Summarization

reversed

enumerate

min

max

lambda

7

13

2

Bit manipulation without comments

IP Network: Route Summarization

reversed

enumerate

min

max

lambda

11

6

First

Transposed Matrix

zip

map

list

Without datetime and calendar

The Most Frequent Weekdays

not

or

and

int

3

15

2

One line

Solution for Anything

object

type

dict

lambda

True

8

16

1

First

Merge Intervals

max

not

append

else

for

one line (permutations)

The End of Other

endswith

any

lambda

comprehension

2

dumb breath-first-search

Open Labyrinth

collections.deque

deque

collections

not

while

1

First

The Longest Palindromic

enumerate

min

max

join

while

1

24

4

Easy and fast

Numbers Factory

map

not

inline-if

sorted

join

6

3

matrix equation

Three Points Circle

findall

re.findall

float

format

round

1

2

ycomb

The Best Number Ever

lambda

inline-if

First

Speech Module

get

and

else

int

str

Second dp (len is 95)

Golden Pyramid

functools.reduce

reduce

functools

enumerate

max

6

1

one line (dynamic prog)

Golden Pyramid

functools.reduce

reduce

functools

enumerate

max

7

4

Second

House Password

functools.partial

partial

functools

re.search

search

lambda, str(tuple) and concat

Exec Quine

lambda

str

1

23

1

Dumb and easy

Moria Doors

reversed

findall

re.findall

re

min

16

4

1

Functional way

Skew-symmetric Matrix

zip

map

list-comp

list

comprehension

codegolf 91

Weak Point

zip

map

enumerate

min

lambda

Dummy replace

Unruly

any

tuple

zip

replace

count

2

3

Without dfs

Signpost

cached_property

functools.cached_property

id

class

union

3

1

one line (lambda inception)

Number Base

chr

max

lambda

inline-if

int

Math magic

The Hamming Distance

1

eval

Restricted Sum

eval

map

join

str

2

Functional way

Spaceship Landing Strip

getitem

operator.getitem

slice

functools.partial

partial

4

11

3

oneliner

Unlucky Days

lambda

sum

range

comprehension

and not not + triple quotes

Palindromic Palindrome

lambda

simple

Stair Steps

max

append

range

len

for

Second: std (proper way)

Min and Max

gt

operator.gt

lt

operator.lt

operator

10

1

std

Min and Max

gt

operator.gt

lt

operator.lt

iter

1

2

Dummy bfs

River Crossing

NamedTuple

typing.NamedTuple

class

heappush

heapq.heappush

4 lines with comments

CheckSum

re.sub

sub

r-string

ord

map

2

Lambda just for fun

The Nearest Square Number

min

abs

lambda

list-comp

comprehension

14

bits

Seven Segment

ord

enumerate

not

lambda

sum

Fast O(log(n)) and clear magic (only 3 integer vars)

Ghosts Age

range

for

if

1

Bron-Kerbosch (backtracking)

Break Rings

isdisjoint

union

yield

functools.reduce

reduce

6

2

Graham scan (easy way)

Convex Hull

cmp_to_key

functools.cmp_to_key

collections.namedtuple

namedtuple

collections.deque

1

2

Easy

Compare Functions

Exception

is

None

except

try

1

lol

Length of the String

len