codeperfectplus

'''
    Topic : Algorithms
    Subtopic : StairCase
    Language : Python
    Problem Statement : Write a program that prints a staircase of size 'n'.
    Url : https://www.hackerrank.com/challenges/staircase/problem
'''
#!/bin/python3

import math

codeperfectplus

/*
    Topic : Algorithms
    Subtopic : StairCase
    Language : C++
    Problem Statement : Write a program that prints a staircase of size 'n'.
    Url : https://www.hackerrank.com/challenges/staircase/problem
*/

#include <bits/stdc++.h>

codeperfectplus

for i in range(1,int(input())): #More than 2 lines will result in 0 score. Do not leave a blank line also
    print( int((i*(pow(10, i) - 1)) / 9 )) 

codeperfectplus

import string


def ginortS(input_string):
	small = ""
	capital = ""
	odd = ""
	even = ""

	for i in input_string:

codeperfectplus

import re

# compile the patterns
pattern = re.compile(
		r'^'
		r'(?!.*(\d)(-?\1){3})'
		r'[456]\d{3}'
		r'(?:-?\d{4}){3}'
		r'$')

codeperfectplus

import math

class Complex(object):
	def __init__(self, real, imaginary):
		self.real = real
		self.imaginary = imaginary
		
	def __add__(self, no):
		return Complex(self.real + no.real, self.imaginary + no.imaginary)
		

codeperfectplus

def plusMinus(arr):
    countPositive = 0
    countNegative = 0
    n = len(arr)
    for i in range(n):
        if arr[i] > 0:
            countPositive += 1 
        elif arr[i] < 0:
            countNegative += 1
    countZero = n - countPositive-countNegative

codeperfectplus

void plusMinus(vector<int> arr) {
    
    float countPositive = 0;
    float countNegative = 0;
    float n = arr.size();

    for(int i;i<n;i++) {
        if (arr[i] > 0)
            countPositive++; 
        else if (arr[i] < 0)

codeperfectplus

def plusMinus(arr):
    countPositive = 0
    countNegative = 0
    n = len(arr)
    for i in range(n):
        if arr[i] > 0:
            countPositive += 1 
        elif arr[i] < 0:
            countNegative += 1
    countZero = n - countPositive-countNegative

codeperfectplus

def is_vowel(letter):
    return letter in ['a', 'e', 'i', 'o', 'u', 'y']

def score_words(words):
    score = 0
    for word in words:
        num_vowels = 0
        for letter in word:
            if is_vowel(letter):
                num_vowels += 1