CODEWITHSUNDEEP
pythonpython-3.xmathmassive
Kristina Toronenko
Kristina Toronenko

Reputation: 27

How to count specific numbers in massive on Python (not list)

I have a program which generates random numbers from -10 to 10. My task is to count how many elements from 1 to 5 are in this massive. the problem is that I can't use functions like counter or others because TypeError: 'int' object is not iterable . Which functions can i use to fix it?

import random

for i in range(51):
    a = random.randint(-10, 10)
print(a)

Upvotes: 1

Views: 157

Answers (2)

Stef
Stef

Reputation: 15515

You absolutely can use collections.Counter for this:

import random
import collections
c = collections.Counter(random.randint(-10, 11) for i in range(51))
print(c)
# Counter({-9: 7, 10: 7, -5: 5, 8: 3, 1: 3, -10: 3, -4: 3, -7: 3, 5: 3, 0: 3, -3: 2, 6: 2, 4: 2, 9: 2, 3: 1, -6: 1, 2: 1})
n = sum(c[i] for i in range(1,6))  # number of elements between 1 and 5
print(n)
# 10

Upvotes: 2

solid.py
solid.py

Reputation: 2812

You could try something like this, which sums 1 if the random int is in range from 1 to 5, and this runs for 51 times. Finally, this sum is printed.

import random

print(sum(1 for i in range(51) if random.randint(-10, 11) in range(1, 5)))

The above segment is equivalent to:

import random

a = 0
for i in range(51):
    if random.randint(-10, 11) in range(1, 5):
        a += 1
print(a)

Upvotes: 1

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