In Python RSA broadcast attack, why am I using bit length in this binary search for the cube root? Question: https://stackoverflow.com/a/23622115/9481613 Shows this function: def find_cube_root(n): lo = 0 hi = 1 << ((n.bit_length() + 2) // 3) while lo < hi: mid = (lo+hi)//2 if mid**3 < n: lo = mid+1 else: hi = …
Why does python's bisect_left return a valid index even if the value does not exist? Question: I want to find if a number exists in a sorted array. To be straight an array contains fibonaccci number from 1 to 63. Below is the fibonacci number generator and some of it’s output. stacksize = 10000 # …
Javascript's equivalent of R's findInterval() or Python's bisect.bisect_left Question: I can’t find how to determine to which interval an element belongs based on an Array for JavaScript. I want the behavior of bisect.bisect_left from Python. Here is some sample code: import bisect a = [10,20,30,40] print(bisect.bisect_left(a,0)) #0 because 0 <= 10 print(bisect.bisect_left(a,10)) #0 because 10 …
In Python, how do you find the index of the first value greater than a threshold in a sorted list? Question: In Python, how do you find the index of the first value greater than a threshold in a sorted list? I can think of several ways of doing this (linear search, hand-written dichotomy,..), but …
Binary search (bisection) in Python Question: Is there a library function that performs binary search on a list/tuple and return the position of the item if found and ‘False’ (-1, None, etc.) if not? I found the functions bisect_left/right in the bisect module, but they still return a position even if the item is not …
