I have a simple python code to create random numbers, here it is
import random
for x in range(100):
print (random.randint(1,100))
even though this code creates random numbers it can still create duplicates, can anyone help me out with an idea to make it not be able to print duplicates?
Generate the numbers first, then shuffle them, and pick from that list.
import random
numbers = list(range(100)) # `numbers` is now a list [0, 1, ..., 99]
random.shuffle(numbers) # the list is now in random order
while numbers: # While there are numbers left,
a = numbers.pop() # take one from the list,
print(a) # and print it.
You could store the random number it just generated into a list and then iterate through the list each time you go to generate another number. If the newly generated number exists within the list scrap it and go for another generation.
That's my best guess but I won't be writing you any code, it's best that you figure that out and learn. If you do need a code example let me know and I can make one for you.
set would be a better data structure to hold the numbers already seen. Iterating over a list is O(n) complexity, while a set in Python is far less.HashSet, I think? It's been a while since I've done Java) would be better than a list, I believe. :)