2D-array

Question

Hey guys! I am a beginner programer and I have a problem. so i have a 2d array, let’s say it has 4 columns (Product, item code, quantity and price)
I wish to find the product with the highest price, so I look specifically at the price column. it should look something like this:
for column (3)
for rows in range (100):
…..

However, this way does not work. Can anyone pls help?

Answer 1

Екатерина Радаева ,

in python it could be like this:

....
max_ = ... # get first element from column 4
for line in arr:
if (buf := line[3]) > max_:
max_ = ...# assign current item to max_
....

Answer 2

Idk about python syntax but this should be something like that (just the concept)

MaxPrice = 0;

For row in array:
Price = row[3];
If price > maxprice:
Maxprice = price;

This have a time complexity of O(n) and space O(1)