Here is the simple script:

var faker = require('faker');
const createCsvWriter = require('csv-writer').createObjectCsvWriter;
const csvWriter = createCsvWriter({
path: 'out.csv',
header: […


First thing first, lets install some tools we need.

  1. WebAssembly Binary Toolkit, or wabt

To make life easier, I have updated my zshrc file, so i can run wabt commands. Like

# WebAssembly
alias wat2wasm="~/Downloads/wabt-1.0.23/bin/wat2wasm"
alias wasm-decompile="~/Downloads/wabt-1.0.23/bin/wasm-decompile"
alias wasm-objdump="~/Downloads/wabt-1.0.23/bin/wasm-objdump"
alias wasm-strip="~/Downloads/wabt-1.0.23/bin/wasm-strip"
alias wasm2c="~/Downloads/wabt-1.0.23/bin/wasm2c"
alias wast2json="~/Downloads/wabt-1.0.23/bin/wast2json"
alias wasm2wat="~/Downloads/wabt-1.0.23/bin/wasm2wat"
alias wasm-interp="~/Downloads/wabt-1.0.23/bin/wasm-interp"

As you can see, I have downloaded wabt in Downloads folder and I unzip there.

Now run the command from a different terminal

wasm2wat --version

If that works, you are ready to write your…


Given an integer n (in base 10) and a base k, return the sum of the digits of n after converting n from base 10 to base k.

After converting, each digit should be interpreted as a base 10 number, and the sum should be returned in base 10.

Example 1:

Input: n = 34, k = 6
Output: 9
Explanation: 34 (base 10) expressed in base 6 is 54. 5 + 4 = 9.

Example 2:

Input: n = 10, k = 10
Output: 1
Explanation: n is already in base 10. 1 + 0 = 1.

Constraints:

  • 1…


The frequency of an element is the number of times it occurs in an array.

You are given an integer array nums and an integer k. In one operation, you can choose an index of nums and increment the element at that index by 1.

Return the maximum possible frequency of an element after performing at most k operations.

Example 1:

Input: nums = [1,2,4], k = 5
Output: 3
Explanation:
Increment the first element three times and the second element two times to make nums = [4,4,4].
4 has a frequency of 3.

Example 2:

Input: nums = [1,4,8,13]…


You are given two positive integer arrays nums1 and nums2, both of length n.

The absolute sum difference of arrays nums1 and nums2 is defined as the sum of |nums1[i] - nums2[i]| for each 0 <= i < n (0-indexed).

You can replace at most one element of nums1 with any other element in nums1 to minimize the absolute sum difference.

Return the minimum absolute sum difference after replacing at most one element in the array nums1. Since the answer may be large, return it modulo 109 + 7.

|x| is defined as:

  • x if x >= 0, or
  • -x

You are given the logs for users’ actions on LeetCode, and an integer k. The logs are represented by a 2D integer array logs where each logs[i] = [IDi, timei] indicates that the user with IDi performed an action at the minute timei.

Multiple users can perform actions simultaneously, and a single user can perform multiple actions in the same minute.

The user active minutes (UAM) for a given user is defined as the number of unique minutes in which the user performed an action on LeetCode. …


A sentence is a list of words that are separated by a single space with no leading or trailing spaces. Each of the words consists of only uppercase and lowercase English letters (no punctuation).

  • For example, "Hello World", "HELLO", and "hello world hello world" are all sentences.

You are given a sentence s​​​​​​ and an integer k​​​​​​. You want to truncate s​​​​​​ such that it contains only the first k​​​​​​ words. Return s​​​​​​ after truncating it.

Example 1:

Input: s = "Hello how are you Contestant", k = 4
Output: "Hello how are you"
Explanation:
The words in s are ["Hello", "how" "are"…

You are given an even integer n​​​​​​. You initially have a permutation perm of size n​​ where perm[i] == i(0-indexed)​​​​.

In one operation, you will create a new array arr, and for each i:

  • If i % 2 == 0, then arr[i] = perm[i / 2].
  • If i % 2 == 1, then arr[i] = perm[n / 2 + (i - 1) / 2].

You will then assign arr​​​​ to perm.

Return the minimum non-zero number of operations you need to perform on perm to return the permutation to its initial value.

Example 1:

Input: n = 2
Output: 1
Explanation…


You are given a string s that contains some bracket pairs, with each pair containing a non-empty key.

  • For example, in the string "(name)is(age)yearsold", there are two bracket pairs that contain the keys "name" and "age".

You know the values of a wide range of keys. This is represented by a 2D string array knowledge where each knowledge[i] = [keyi, valuei] indicates that key keyi has a value of valuei.

You are tasked to evaluate all of the bracket pairs. When you evaluate a bracket pair that contains some key keyi, you will:

  • Replace keyi and the bracket pair with…

Omar Faroque

Enterprise Applications Architectecture | JAVA | Rust |Parallel & Distributed Programing | Node.js | IoT | Golang |Starter|Microservices

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