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76 lines
1.9 KiB
Python
76 lines
1.9 KiB
Python
# Author - Kristiāns Francis Cagulis
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# Date - 29.09.2021
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# task 1 - prime numbers
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def is_prime(number):
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import math
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if number > 0:
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if number == 1:
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return "1 nav pirmsskaitlis"
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else:
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for i in range(2, int(math.sqrt(number)) + 1):
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if number % i == 0:
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return f"{number} nav pirmsskaitlis"
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return f"{number} ir pirmsskaitlis"
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else:
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return "Skaitlim jābūt lielākam par 0"
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# task 2 - cities
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class Cities:
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def __init__(self, p0, perc, delta, p):
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self.p0 = p0 # initial population
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self.perc = float(perc[:-1]) / 100 # annual percentage population growth
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self.delta = delta # number of arrivals (departures) per year
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self.p = p # population size required
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def _calculate(self):
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years = 0
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while (True):
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self.p0 = self.p0 + self.p0 * self.perc + self.delta # calculate the new population in each year via the formula
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years += 1
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if self.p0 >= self.p: # if the initial population reaches the required
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return f"{self.p} iedzīvotāju skaits tiks sasniegts pēc {years} gadiem"
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if self.p0 < 0: # if the required population is unreachable
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return -1
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city_0 = Cities(1000, "2%", 50, 1200)
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city_1 = Cities(1000, "2%", -50, 5000)
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city_2 = Cities(1500, "5%", 100, 5000)
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city_3 = Cities(1_500_000, "2.5%", 10_000, 2_000_000)
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def main():
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task = int(input("""Ivēlieties uzdevumu:
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1 - pirmais uzdevums
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2 - otrais uzdevums
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"""))
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if task == 1:
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print(is_prime(int(input("Ievadiet skaitli: "))))
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elif task == 2:
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city = int(input("""Izvēlieties pilsētu:
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0 - piemēra pilsēta
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1 - pirmā pilsēta
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2 - otrā pilsēta
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3 - trešā pilsēta
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"""))
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if city == 0:
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print(city_0._calculate())
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elif city == 1:
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print(city_1._calculate())
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elif city == 2:
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print(city_2._calculate())
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elif city == 3:
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print(city_3._calculate())
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else:
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print("Ievadīts nepareizs skaitlis.")
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else:
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print("Ievadīts nepareizs skaitlis.")
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if __name__ == '__main__':
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main() |