brute force solution for encode decode neet code problem

encode-decode-pseudocode-brute-force.js

function encode(strs):
  encodedStr = ""
  
  // Iterate thru strings 
  for each str of strs:
    // Escape colons in the string
    escapedStr = str.replace(/:/g, "::")
    // Append the length of the escaped string to the encodedStr
    encodedStr += length(escapedStr) + ":" + escapedStr
  
  // Return the encoded string 
  return encodedStr

function decode(encodedStr):
  // List to store decoded strings
  decodedStrs = []
  // Initialize index
  idx = 0
  
  // Loop thru the encoded string
  while idx < length(encodedStr):
    // Find the index of the delimiter
    delimiterIdx = encodedStr.indexOf(":", idx)
    // Get the length of the string
    strLength = parseInt(encodedStr substring from idx to delimiterIdx)
    // Move the index after the delimiter
    idx = delimiterIdx + 1
    // Extract the escaped string using the length
    escapedStr = encodedStr.substring(idx, idx + strLength)
    // Replace double colons with single colons
    decodedStr = escapedStr.replace(/::/g, ":")
    // Add the decoded string to the list
    append decodedStr to decodedStrs
    
    // Move the index forward by the strLength 
    idx += strLength
  
  // Return decode strings 
  return decodedStrs