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Thread: semantics of comma inside array brackets
Post: RE: semantics of comma inside array brackets
| Thanks for your answer. It seems like dat[:,i] prints the i. index of every row, so the i. column of every row. dat[i:,j] seems to print the first j elements of row i. But this is kind of conflicting,... |
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usercat123 |
Data Science |
2 |
1,367 |
Apr-23-2022, 09:08 AM |
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Thread: semantics of comma inside array brackets
Post: semantics of comma inside array brackets
| hi,
I am trying to understand a piece of code, namely
import matplotlib.pyplot as plt
import numpy as np
expdat = np.genfromtxt(fname='expDat.txt', delimiter=',',
dtype=np.in... |
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usercat123 |
Data Science |
2 |
1,367 |
Apr-23-2022, 08:09 AM |
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Thread: extract and plot data from a txt file
Post: RE: extract and plot data from a txt file
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usercat123 |
Data Science |
2 |
1,237 |
Apr-20-2022, 06:50 PM |
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Thread: extract and plot data from a txt file
Post: extract and plot data from a txt file
| Hello,
I want to extract data from a txt file and plot it using the matplot.pyplot module.
The format of the file is as follows:
"", "V1", ..., "Vn"
"1", data1_1, ..., data1_n
...
"m", datam_1,...,... |
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usercat123 |
Data Science |
2 |
1,237 |
Apr-20-2022, 03:56 PM |
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Thread: bug in subset sum algorithm
Post: RE: bug in subset sum algorithm
| Yes, I was aware that there will be an exception if arr[i] > k for some i.
arr = [2,4,5,6]
print(driver(arr,19))I get True with line 12 executed and False if its not executed. |
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usercat123 |
General Coding Help |
3 |
1,385 |
Feb-06-2022, 04:45 PM |
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Thread: bug in subset sum algorithm
Post: bug in subset sum algorithm
| Given an array of integers and a value k, return True if there exists a subset of elements of the array that sums up to k.
This is my algorithm. Initially, the line that I commented was included and t... |
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usercat123 |
General Coding Help |
3 |
1,385 |
Feb-06-2022, 12:23 PM |
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Thread: shallowcopy of an object
Post: RE: shallowcopy of an object
| (Feb-05-2022, 05:13 AM)deanhystad Wrote: "res = [[]]" creates a variable local to driver(). "res = res + temp" creates a variable local to subsets(). Not only are these different variables, but th... |
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usercat123 |
General Coding Help |
3 |
1,456 |
Feb-05-2022, 01:52 PM |
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Thread: shallowcopy of an object
Post: shallowcopy of an object
| Can somebody explain to me why in the following code, temp is equal to res after the loop body statement? I have tested it with input [1] and after the loop executes temp is as I said equal to the new... |
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usercat123 |
General Coding Help |
3 |
1,456 |
Feb-04-2022, 08:30 PM |
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Thread: longest palindromic subsequence DP solution bug
Post: RE: longest palindromic subsequence DP solution bu...
| Thanks to both of you, it seems to work now. |
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usercat123 |
General Coding Help |
9 |
2,368 |
Feb-03-2022, 02:22 PM |
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Thread: longest palindromic subsequence DP solution bug
Post: RE: longest palindromic subsequence DP solution bu...
| (Feb-02-2022, 07:20 PM)deanhystad Wrote: And the longest palindrome I see in "GATTACAGAT" is "ATTA". I think your output should be 4, not 6 (or 5).
The question asks for a sequence not substring, t... |
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usercat123 |
General Coding Help |
9 |
2,368 |
Feb-02-2022, 07:27 PM |
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Thread: longest palindromic subsequence DP solution bug
Post: RE: longest palindromic subsequence DP solution bu...
| (Feb-02-2022, 05:38 PM)deanhystad Wrote: The primary logic flaw is thinking your code is readable. Some comments would be nice.
Sorry about that, I added comments. |
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usercat123 |
General Coding Help |
9 |
2,368 |
Feb-02-2022, 06:24 PM |
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Thread: longest palindromic subsequence DP solution bug
Post: longest palindromic subsequence DP solution bug
| Hey,
I am trying to code the following problem: given a string find the length of the longest palindromic subsequence and for the input "GATTACAGAT" I get ouput 5 instead of the expected 6. I cannot ... |
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usercat123 |
General Coding Help |
9 |
2,368 |
Feb-02-2022, 03:52 PM |
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Thread: error "list object has no attribute transpose()"
Post: RE: error "list object has no attribute transpose(...
| Thanks for your answer. If I do that it throws
Error:Traceback (most recent call last):
File "FullyConnectedNetwork.py", line 143, in <module>
network.SGD(test_data,1,1,1)
File "FullyC... |
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usercat123 |
Data Science |
4 |
4,288 |
Jan-28-2022, 12:01 PM |
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Thread: error "list object has no attribute transpose()"
Post: RE: error "list object has no attribute transpose(...
| Sorry about that.
Error:Traceback (most recent call last):
File "FullyConnectedNetwork.py", line 143, in <module>
network.SGD(test_data,1,1,1)
File "FullyConnectedNetwork.py", line 47, ... |
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usercat123 |
Data Science |
4 |
4,288 |
Jan-27-2022, 09:15 PM |
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Thread: error "list object has no attribute transpose()"
Post: error "list object has no attribute transpose()"
| Hi,
I am trying to build a neural network this is my code
import numpy as np
import random
class QuadraticCost(object):
@staticmethod
def cost(a,y):
return 0.5 * np.linalg.norm(a-y)... |
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usercat123 |
Data Science |
4 |
4,288 |
Jan-27-2022, 07:06 PM |
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Thread: building a sudoku solver
Post: RE: building a sudoku solver
| Thanks I overlooked that one. On another note, I have now expanded with a sudoku generator. First, I want to generate a valid sudoku but I have made a mistake while doing so. Here is the updated code.... |
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usercat123 |
General Coding Help |
7 |
2,777 |
Oct-01-2021, 03:32 PM |
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Thread: building a sudoku solver
Post: RE: building a sudoku solver
| I'm too dumb to spot the bug, can you tell me whats wrong? |
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usercat123 |
General Coding Help |
7 |
2,777 |
Sep-28-2021, 01:45 PM |
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Thread: building a sudoku solver
Post: RE: building a sudoku solver
| (Sep-27-2021, 03:32 PM)deanhystad Wrote: "test" will never be printed. The function contains a return that prevents every reaching the print command.
It doesn't matter though, because your program... |
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usercat123 |
General Coding Help |
7 |
2,777 |
Sep-27-2021, 03:38 PM |
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Thread: building a sudoku solver
Post: building a sudoku solver
| Hi,
For some reason, a call to solve_sudoku() will not print the solved sudoku, "test" is not even printed and I don't see why. Can anyone help me?
import numpy as np
def possible(x,y,n):
for i ... |
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usercat123 |
General Coding Help |
7 |
2,777 |
Sep-27-2021, 03:07 PM |
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Thread: confusion on semantics of code
Post: RE: confusion on semantics of code
| Yes, I was working with the AST module. Thanks :) |
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usercat123 |
General Coding Help |
2 |
1,690 |
Jul-21-2021, 07:37 AM |
