class Solution:
  def isAnagram(self, s, t):
    # TODO: Write your code here
    charSet = {}

    if len(s) != len(t):
      return False

    for char in s:
      if char not in charSet:
        charSet[char] = 0
      else:
        charSet[char] += 1
    
    for char in t:
      if char not in charSet:
        return False
      else:
        if charSet[char] >= 0:
          charSet[char] -= 1
        else:
          return False

    return True