Write a programElementary20 XPExercise 9/16

A number inside a random number

Task

The computer generates a random number from the interval (100,000,000; 200,000,000) and the user enters a number to search for in it. The program prints whether the searched number occurs in the generated one and how many times.

A random number cannot be tested by comparing output, so split the program into two functions - the tests call them directly:

vygeneruj() returns a random whole number from the interval (100,000,000; 200,000,000) without the end points,
pocet_vyskytov(velke, hladane) gets two whole numbers and returns how many times the digits of hladane occur in the digits of velke (occurrences do not overlap, as with the count method).

The main program is already done under if __name__ == "__main__": - it does not run during the tests, but you can try it with Run.

What the program should do

pocet_vyskytov(152341523, 15) returns 2.

Examples

Call
```
print(pocet_vyskytov(152341523, 15))
```
Expected output
```
2
```

Call

cisla = [vygeneruj() for _ in range(300)]
print(all(type(c) == int and 100000000 < c < 200000000 for c in cisla))
print(len(set(cisla)) > 1)

Expected output

True
True

After you submit, 3 hidden tests will also check your solution: a single digit, not found, searching the whole number.

Python starts the first time you run code.

import random
def vygeneruj():
    # vráť náhodné celé číslo z intervalu (100000000; 200000000)
    pass
def pocet_vyskytov(velke, hladane):
    # vráť, koľkokrát sa číslo hladane nachádza v čísle velke
    pass
if __name__ == "__main__":
    velke = vygeneruj()
    print(velke)
    hladane = int(input("Aké číslo hľadáš? "))
    kolko = pocet_vyskytov(velke, hladane)
    if kolko > 0:
        print("nachadza sa", kolko, "krat")
    else:
        print("nenachadza sa")

Ctrl+Enter runs the program. Tab indents. Press Esc, then Tab, to leave the editor.

Input (stdin)

Each line = one call to input().

Output

Hints

Try it yourself first. Each hint reveals a little more - and lowers the reward a little.

Signed out, hints are free - but no XP is awarded either.

Solution

The solution unlocks after the last hint.