input: Write a function to compute the edit distance between two strings. The function should return the minimum number of operations (insert, remove, or replace) needed to transform one string into the other. Provide the function definition and the example given in the instruction.
  
  def editDistance(string1, string2, m, n):
      # Create an empty matrix
      dp = [[0 for x in range(n+1)] for x in range(m+1)] 
    
      # Filling the first column of the matrix
      for i in range(m+1): 
          dp[i][0] = i 
    
      # Filling the second column of the matrix 
      for j in range(n+1): 
          dp[0][j] = j 
    
      # Populate the matrix
      for i in range(1, m+1): 
          for j in range(1, n+1): 
    
              if string1[i-1] == string2[j-1]: 
                  dp[i][j] = dp[i-1][j-1] 
              else: 
                  dp[i][j] = 1 + min(dp[i][j-1],        # Insert
                                     dp[i-1][j],        # Remove 
                                     dp[i-1][j-1])      # Replace
    
      return dp[m][n] 
  
  # Example
  string1 = "kitten"
  string2 = "sitting"
  m = len(string1) 
  n = len(string2) 
  print(editDistance(string1, string2, m, n)) # Output: 3
output: def editDistance(string1, string2, m, n):
      dp = [[0 for x in range(n+1)] for x in range(m+1)] 
    
      for i in range(m+1): 
          dp[i][0] = i 
    
      for j in range(n+1): 
          dp[0][j] = j 
    
      for i in range(1, m+1): 
          for j in range(1, n+1): 
    
              if string1[i-1] == string2[j-1]: 
                  dp[i][j] = dp[i-1][j-1] 
              else: 
                  dp[i][j] = 1 + min(dp[i][j-1], dp[i-1][j], dp[i-1][j-1])
    
      return dp[m][n]