Slove a malware challenge

Question

Write s python program to do this task: Your company is analyzing malware which targets numerical record files. The malware uses a sliding window over the array of numbers in a file, and tries to match the following | T1, -, -, X, -, -, Tr The entire window is moved so that 'X' passes through all the values and is compared to the numbers at and 'Tr' locations, which are positioned at a constant offset to 'X'. The malware has the following rules: • If the value at the 'TI' or 'Tr' position of the pattern is bigger or equal to the value at the 'X' position, th malware replaces the value at 'X' with 0. • If the value at the 'TI' or 'Tr' offset is out of bounds, then the value at 'X' is only compared to the other existing value. • The record is processed in two stages: first, all the positions that should be set to 0 are located, usin original values for comparison. Only after all positions have been identified do they get set to 0. For example, if the values in a record file are the following: [1, 2, 0, 5, 0, 2,

Answer 1

Mohammed Hassan ,

By the way, the algorithm in that puzzle is similar to the filters used in graphics, such as a smoothing algorithm, where you use the values of surrounding pixels to set the value of the center pixel.

Answer 2

Per Bratthammar
Keith
Rain
How can we solve this challenge because i really don't get the full meaning?

Answer 3

Do you have full description as well as input outpt examples?

Answer 4

Per Bratthammar the i dea is simple just to compare the value of position x to T1,Tr if T,Tr >=X should X=0,else make compare for other positions with X position value.

But the point which i not get it is in this Example :
[1, 2, 0, 5, 0, 2, 4, 3, 3, 3] The expected values after the malware runs are: [1, 0, 0, 5, 0, 0, 0, 3, 3, 0]

Why the last 3 in the list became 0 only .
While other 3 not compare to value of position x

Answer 5

Per Bratthammar this task looks like esay but needs more explanation ,i search on YouTube but idont find any thing usfull

Answer 6

@ T1,Tr
Refer as locations in list
U must compare the the value of x position to T1,Tr

Answer 7

Rain i already past the whole information for task no missing point

Answer 8

Mohammed Hassan ,

At the bottom, it says, "For example," and starts to give a list. The list is cut off in the middle, and the rest of the directions are missing.

Answer 9

Mohammed Hassan ,

OK. I solved it by adding 10 lines to the starting code supplied by the test site, so I can now help you.

What have you tried so far?

Answer 10

Mohammed Hassan ,

I already explained why the last 3 changed to 0 yesterday:

"The last 3 is set to 0 because, when X is on the 3, T1 is on a 4, and 4 is greater than or equal to 3."

Tr represents 4 steps right of X.

X represents every index in the list one by one. The other two are always relative to X. If either of the other two is outside the list, it is ignored.

CheatGPT doesn't think, and it has no concept of what a fact is. It's just an algorithm to generate imitation human text. People shouldn't expect so much from it.

Answer 11

The malware analysis can be got for example in this way:

https://sololearn.com/compiler-playground/cs829PDqAbrK/?ref=app

Answer 12

Mohammed Hassan ,

Be sure to save and share a link to your final code when you pass the test.

Answer 13

Rain
JaScript
I finally seccssfully done the code here my Method.

To be honest this challenge require more aware about different python functions like to be esay to you
https://sololearn.com/compiler-playground/cJZoFYaYJ3Pj/?ref=app

Answer 14

Mohammed Hassan
Congratulations.

Answer 15

Mohammed Hassan ,

Ah, you used enumerate(). 👍

I will give a speed-optimization suggestion in a comment attached to your code.

Answer 16

Rain
JaScript

The secret key to win a code challenge is Great knowledge about useful python libraries & funcation which we can get it from References

Answer 17

Rain
😂😂😂

Not fully 3 days but we are busy with another activities (iam study for data analyst with python)

Answer 18

Rain
For example:
[1, 2, 0, 5, 0, 2, 4, 3, 3, 3
] The expected values after the malware runs are: [1, 0, 0, 5, 0, 0, 0, 3, 3, 0]

Answer 19

Mohammed Hassan ,

The last 3 is set to 0 because, when X is on the 3, T1 is on a 4, and 4 is greater than or equal to 3.

But I don't know why the first 1 in the list is not set to 0, because when X is on the 1, Tr is on a 5, and 5 is greater than or equal to 1, so 1 should have been set to 0.

I don't know why the first 2 in the list is set to 0, because when the X is on that 2, Tr is on a 0, and 0 is not greater than or equal to 2, so 2 should not have been set to 0.

Maybe the spacing should be
T1, _, _, X, _, _, _, Tr
not symmetrical.

I need to see the original site. Maybe it's a typo. No link?

Was this translated by optical character recognition (OCR) at some pont? I suspect that T1 was actually Tl, with a lowercase L for left, to match the lowercase r for right in Tr. Also, many sentences are missing text, as if the OCR missed the edges of the page.

The directions are basically wrecked, which makes it hard to help with.

Answer 20

def find_matching_indices(arr, T1, Tr, window_size):
# Initialize an empty list to store the indices that match the pattern
matching_indices = []

# Iterate through the array with a sliding window of the given size
for i in range(len(arr) - window_size + 1):
window = arr[i : i + window_size]
X = window[1]
T1_val = window[T1]
Tr_val = window[Tr]

# Check if the value at T1 or Tr is bigger than or equal to the value at X
if T1_val >= X or Tr_val >= X:
# If either T1 or Tr is out of bounds, check if the value at X is 0
if T1 >= window_size or Tr >= window_size:
if X == 0:
matching_indices.append(i)
else:
# If T1 and Tr are in bounds, check if they are both bigger than or equal to X
if T1_val >= X and Tr_val >= X:
matching_indices.append(i)

return matching_indices

def set_values_to_zero(arr, indices):
# Iterate through the array and set the values at the given indices to 0
for i in indices:
arr[i] = 0

def process_record_file(arr, T1, Tr, window_size):
# Find the indices that match the pattern
indices = find_matching_indices(arr, T1, Tr, window_size)

# Set the values at the matching indices to 0
set_values_to_zero(arr, indices)

# Example usage:
arr = [1, 2, 0, 5, 0, 2]
T1 = 0
Tr = 4
window_size = 7

process_record_file(arr, T1, Tr, window_size)
print(arr) # Output: [0, 2, 0, 0, 0, 0]

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