recursion

问题 After completing an assignment to create pascal's triangle using an iterative function, I have attempted to recreate it using a recursive function. I have gotten to the point where I can get it to produce the individual row corresponding to the number passed in as an argument. But several attempts to have it produce the entire triangle up to and including that row have failed. I even tried writing a separate function which iterates over the range of the input number and calls the recursive

问题 I'm coming back to programming after having done none for several years, and created a Sudoku game to get my feet wet again. I've written a recursive function to brute-force a solution, and it will do so for simple board states, but runs into a stack overflow most of the time for more complicated board states. I know that this could be averted using loops or a more efficient algorithm, but since this is for the sake of learning I want to know how to allocate more memory to the stack

问题 I'm coming back to programming after having done none for several years, and created a Sudoku game to get my feet wet again. I've written a recursive function to brute-force a solution, and it will do so for simple board states, but runs into a stack overflow most of the time for more complicated board states. I know that this could be averted using loops or a more efficient algorithm, but since this is for the sake of learning I want to know how to allocate more memory to the stack

问题 This question already has answers here : How does this recursion work? (11 answers) Closed 18 days ago . I've been wracking my brain on this all day, and I still don't get it. Could someone please explain to me, how on earth does this function work?!?!?! function findSolution(target) { function find(current, history) { if (current == target) { return history; } else if (current > target) { return null; } else { return find(current + 5, `(${history} + 5)`) || find(current * 3, `(${history} * 3

问题 This question already has answers here : How does this recursion work? (11 answers) Closed 18 days ago . I've been wracking my brain on this all day, and I still don't get it. Could someone please explain to me, how on earth does this function work?!?!?! function findSolution(target) { function find(current, history) { if (current == target) { return history; } else if (current > target) { return null; } else { return find(current + 5, `(${history} + 5)`) || find(current * 3, `(${history} * 3

问题 This question already has answers here : How does this recursion work? (11 answers) Closed 18 days ago . I've been wracking my brain on this all day, and I still don't get it. Could someone please explain to me, how on earth does this function work?!?!?! function findSolution(target) { function find(current, history) { if (current == target) { return history; } else if (current > target) { return null; } else { return find(current + 5, `(${history} + 5)`) || find(current * 3, `(${history} * 3

问题 This question already has answers here : How does this recursion work? (11 answers) Closed 18 days ago . I've been wracking my brain on this all day, and I still don't get it. Could someone please explain to me, how on earth does this function work?!?!?! function findSolution(target) { function find(current, history) { if (current == target) { return history; } else if (current > target) { return null; } else { return find(current + 5, `(${history} + 5)`) || find(current * 3, `(${history} * 3

问题 I'm having some trouble getting the correct solution for the following problem: Your goal is given a positive integer n, find the minimum number of operations needed to obtain the number n starting from the number 1. More specifically the test case I have in the comments below. # Failed case #3/16: (Wrong answer) # got: 15 expected: 14 # Input: # 96234 # # Your output: # 15 # 1 2 4 5 10 11 22 66 198 594 1782 5346 16038 16039 32078 96234 # Correct output: # 14 # 1 3 9 10 11 22 66 198 594 1782

问题 Update: I'm still looking for a solution without using something from outside sources. Given: T(n) = T(n/10) + T(an) + n for some a , and that: T(n) = 1 if n < 10 , I want to check if the following is possible (for some a values, and I want to find the smallest possible a ): For every c > 0 there is n 0 > 0 such that for every n > n 0 , T(n) >= c * n I tried to open the function declaration step by step but it got really complicated and I got stuck since I see no advancement at all. Here is

问题 So I understand the reason for the recursion limit of 1000. I want to run a script continuously, but am I right understanding that eventually the recursion limit will be reached (even if I set it higher) and Python will break? In the scheme of things, its not a big deal, because I could get the OS to keep re-starting the script, but I thought there may be a more elegant solution I can employ within the script itself (swapping threads??). My script: import os import subprocess import time