import random

def insert_sort(arr):
    for i in range(1, len(arr)):
        j = i - 1
        ele = arr[i]
        while arr[j] > ele and j >= 0:
            arr[j + 1] = arr[j]
            j -= 1
        arr[j + 1] = ele
    return arr


def mkRandList(n):
    a=[]
    for i in range(1,n+1):
        a.insert(0, random.randint(0,10000))
    return a


def validation(alist):
    for i in range(len(alist)-1):
        if (alist[i] > alist[i+1]):
            return False

    return True


a = mkRandList(20000)
insert_sort(a)
print(validation(a))