Skip to main content

Create a regular expression to match big numbers

I get a response from the backend as text in which I have to find a match for numbers which is minimum 16 digits in length.

Let's say I have data something like this:

{"BIG_INT": 123456789012345675,"BIG_INT_ARRAY_SINGLE": [123456789012345676],"BIG_INT_ARRAY_MULTIPLE": [123456789012345661,12345678901234562,12345678901234563,12345678901234564],"STRING_BIG_INT_ARRAY": "[12345678901234567,12345678901234567, 12345678901234567,12345678901234567]","STRING_BIG_INT":"12345678901234567","BIG_INT_FLOATING_DECIMAL": 12345678901234567.76543210987654321}

There are certain conditions where it should not match a number:

  1. If the number is enclosed within double quotes:
    ("STRING_BIG_INT":"12345678901234567")`
  2. If the numbers are within string enclosed array:
    "STRING_BIG_INT_ARRAY":"[12345678901234567,12345678901234567]"
  3. If the number is fractional:
    "BIG_INT_FLOATING_DECIMAL":12345678901234567.76543210987654321

Conditions where it should match a number:

  1. If it's an integer "BIG_INT": 123456789012345675, here value 123456789012345675 should get matched.
  2. If it's inside an array "BIG_INT_ARRAY_MULTIPLE":[123456789012345678,123456789012345678] here these two numbers should be matched separately.

I tried this regular expression -> (:\s*)([\[])?(\d{16,})(\s*)([,\}\]])

One con in this expression is if we have a array of numbers "test":[12345678901234567,1236543858688483444,26531562351351374343], here my expression only matches the first number. I wanted to match all the numbers inside the array if the array is not enclosed by double quotes.

After matching all numbers, I have code like this to replace numbers to a BigInteger formate(Ex:"16536235653725645345n") and I extract the value part of it and convert the number to a BigInteger.

const bigNumsRegExp = new RegExp(/(:\s*)([\[])?(\d{16,})(\s*)([,\}\]])/g);
`const serializedData = data.replace(bigNumsRegExp, '$1$2"$3n"$4$5');`

So I only wanted a regular Expression which match numbers only from BIG_INT,BIG_INT_ARRAY_SINGLE and BIG_INT_ARRAY_MULTIPLE

Any help from anyone is appreciated.

Thanks

Via Active questions tagged javascript - Stack Overflow https://ift.tt/K613cfw

Labels

Labels:

Comments

Post a Comment

Popular posts from this blog

ValueError: X has 10 features, but LinearRegression is expecting 1 features as input

So, I am trying to predict the model but its throwing error like it has 10 features but it expacts only 1. So I am confused can anyone help me with it? more importantly its not working for me when my friend runs it. It works perfectly fine dose anyone know the reason about it? cv = KFold(n_splits = 10) all_loss = [] for i in range(9): # 1st for loop over polynomial orders poly_order = i X_train = make_polynomial(x, poly_order) loss_at_order = [] # initiate a set to collect loss for CV for train_index, test_index in cv.split(X_train): print('TRAIN:', train_index, 'TEST:', test_index) X_train_cv, X_test_cv = X_train[train_index], X_test[test_index] t_train_cv, t_test_cv = t[train_index], t[test_index] reg.fit(X_train_cv, t_train_cv) loss_at_order.append(np.mean((t_test_cv - reg.predict(X_test_cv))**2)) # collect loss at fold all_loss.append(np.mean(loss_at_order)) # collect loss at order plt.plot(np.log(al...
Post a Comment
Read more

Sorting large arrays of big numeric stings

I was solving bigSorting() problem from hackerrank: Consider an array of numeric strings where each string is a positive number with anywhere from to digits. Sort the array's elements in non-decreasing, or ascending order of their integer values and return the sorted array. I know it works as follows: def bigSorting(unsorted): return sorted(unsorted, key=int) But I didnt guess this approach earlier. Initially I tried below: def bigSorting(unsorted): int_unsorted = [int(i) for i in unsorted] int_sorted = sorted(int_unsorted) return [str(i) for i in int_sorted] However, for some of the test cases, it was showing time limit exceeded. Why is it so? PS: I dont know exactly what those test cases were as hacker rank does not reveal all test cases. source https://stackoverflow.com/questions/73007397/sorting-large-arrays-of-big-numeric-stings
Post a Comment
Read more

How to load Javascript with imported modules?

I am trying to import modules from tensorflowjs, and below is my code. test.html <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title </head> <body> <script src="https://cdn.jsdelivr.net/npm/@tensorflow/tfjs@2.0.0/dist/tf.min.js"></script> <script type="module" src="./test.js"></script> </body> </html> test.js import * as tf from "./node_modules/@tensorflow/tfjs"; import {loadGraphModel} from "./node_modules/@tensorflow/tfjs-converter"; const MODEL_URL = './model.json'; const model = await loadGraphModel(MODEL_URL); const cat = document.getElementById('cat'); model.execute(tf.browser.fromPixels(cat)); Besides, I run the server using python -m http.server in my command prompt(Windows 10), and this is the error prompt in the console log of my browser: Failed to loa...
Post a Comment
Read more