GeeksForGeeks | My solutions to gfg problems | Learning library
kandi X-RAY | GeeksForGeeks Summary
kandi X-RAY | GeeksForGeeks Summary
My solutions to gfg problems.
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of GeeksForGeeks
GeeksForGeeks Key Features
GeeksForGeeks Examples and Code Snippets
Community Discussions
Trending Discussions on GeeksForGeeks
QUESTION
Given an array of integers and number num.
I need to write a function public static int printExpr(int[] a, int num)
The function should print all the combinations that can give the number num with + or - operators, and to return the number of combinations.
The solution should be recursive
For example, for the given array:
{1, 3, 6, 2} and num=4
The output should be:
...ANSWER
Answered 2022-Apr-17 at 19:28Firstly, a quick recap on recursion.
Every recursive implementation consists of two parts:
Base case - a part that represents a set of simple edge-cases which should terminate the recursion. The outcome for these edge-cases is known in advance. For this task, the first base case is when the target sum is reached and the expression has to be printed on the console and the return value has to be
1(i.e. one combination was found). Another base case is a situation when array was fully discovered but the current sum differs from the target. For this case, return value will be0.Recursive case - the part of the method where recursive calls are made and where the main logic resides.
There are tree alternative branches of execution in the recursive case:
- we can either ignore it;
- contribute the target
sum(add to the current string with+sign in front of it and subtract it from the targetsum); - or subtract it from the
sum(add to the current string with-sign in front of it and add it to the targetsum).
In all these cases, we need to advance the index by 1 while calling the method recursively.
In order to found the total number of combinations, we need to introduce a variable (denoted as count in the code below). And the result returned by every recursive branch will contribute that variable.
The code might look like this:
QUESTION
I want the ability to use custom functions in pandas groupby agg(). I Know there is the option of using apply but doing several aggregations is what I want. Below is my test code that I tried to get working for the weighted average.
Python Code
...ANSWER
Answered 2022-Apr-15 at 21:59You can use x you have in lambda (specifically, use it's .index to get values you want). For example:
QUESTION
I'm trying to write a function that evaluates to true if a parameter passed at run-time is contained in a list of ints set up at compile-time. I tried adapting the print example here: https://www.geeksforgeeks.org/variadic-function-templates-c/#:~:text=Variadic%20templates%20are%20class%20or,help%20to%20overcome%20this%20issue.
And have tried this:
...ANSWER
Answered 2022-Apr-08 at 12:54You can achieve what you want with a fold expression (C++17):
QUESTION
I have the simplest streamlit program
...ANSWER
Answered 2022-Mar-28 at 22:02Just ran into the same problem. Seems to be related to the most recent version of the click package.
If you uninstall click:
QUESTION
When I execute the following code, the output is 5 6.
ANSWER
Answered 2022-Mar-21 at 19:16You simply define the macro
QUESTION
I made a sudoku solving code in python, closely following the solution given on GeeksForGeeks, but my code runs really slowly, albeit producing correct results.
It took over 2 minutes to run, whereas the GeeksForGeeks code took under a second to solve 2 such Sudokus:
My Code:
...ANSWER
Answered 2022-Mar-20 at 20:04If you want to know why your code is slow, run it under a profiler. For example cProfile that comes with Python.
I have saved your code as mydoku.py, and ran the following command:
QUESTION
For example, given a List of Integer List list = Arrays.asList(5,4,5,2,2), how can I get a maxHeap from this List in O(n) time complexity?
The naive method:
...ANSWER
Answered 2021-Aug-28 at 15:09According to the java doc of PriorityQueue(PriorityQueue)
Creates a PriorityQueue containing the elements in the specified priority queue. This priority queue will be ordered according to the same ordering as the given priority queue.
So we can extend PriorityQueue as CustomComparatorPriorityQueue to hold the desired comparator and the Collection we need to heapify. Then call new PriorityQueue(PriorityQueue) with an instance of CustomComparatorPriorityQueue.
Below is tested to work in Java 15.
QUESTION
I have trained an RNN model with pytorch. I need to use the model for prediction in an environment where I'm unable to install pytorch because of some strange dependency issue with glibc. However, I can install numpy and scipy and other libraries. So, I want to use the trained model, with the network definition, without pytorch.
I have the weights of the model as I save the model with its state dict and weights in the standard way, but I can also save it using just json/pickle files or similar.
I also have the network definition, which depends on pytorch in a number of ways. This is my RNN network definition.
...ANSWER
Answered 2022-Feb-17 at 10:47You should try to export the model using torch.onnx. The page gives you an example that you can start with.
An alternative is to use TorchScript, but that requires torch libraries.
Both of these can be run without python. You can load torchscript in a C++ application https://pytorch.org/tutorials/advanced/cpp_export.html
ONNX is much more portable and you can use in languages such as C#, Java, or Javascript https://onnxruntime.ai/ (even on the browser)
A running exampleJust modifying a little your example to go over the errors I found
Notice that via tracing any if/elif/else, for, while will be unrolled
QUESTION
I am attempting to solve a coding challenge however my solution is not very performant, I'm looking for advice or suggestions on how I can improve my algorithm.
The puzzle is as follows:
You are given a grid of cells that represents an orchard, each cell can be either an empty spot (0) or a fruit tree (1). A farmer wishes to know how many empty spots there are within the orchard that are within k distance from all fruit trees.
Distance is counted using taxicab geometry, for example:
...ANSWER
Answered 2021-Sep-07 at 01:11This wouldn't be easy to implement but could be sublinear for many cases, and at most linear. Consider representing the perimeter of each tree as four corners (they mark a square rotated 45 degrees). For each tree compute it's perimeter intersection with the current intersection. The difficulty comes with managing the corners of the intersection, which could include more than one point because of the diagonal alignments. Run inside the final intersection to count how many empty spots are within it.
QUESTION
I've looked at quite a few grammar parsers, but none of them seem to be able to generate all parsings of an ambiguous grammar. (I've also checked these questions, which don't provide any helpful solutions to my problem.)
How can I go about generating all the parsings of an ambiguous grammar?
For example, imagine my (ambiguous) grammar is
...ANSWER
Answered 2022-Jan-24 at 23:16Depending on how complicated your grammar is, you can probably just implement it yourself. Most libraries optimize to help with ambiguity, but if you want all the options, you can just do a simple recursion:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install GeeksForGeeks
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page
