ถามผู้รู้ ช่วยแปลง Pseudocodes นี้และอธิบายให้ ดิฉันเข้าใจหน่อยคะ งง

Levenshtein Distance Algorithm
int  LevenshteinDistance(char  s[1..m], char t[1..n])
{
	//for all i and j, d[I,j] will hold the Levenshtein distance between
	//the first i characters of s and the first j characters of t;
	// note that d has (m+1)x(n+1)values
	declare int d[0..m, 0..n]
	for i from 0 to m
		d[i, 0]:=i //the distance of any first string to an empty second string

	for j from 0 to n
		d[i, 0]:=j //the distance of any second string to an empty first string

	for j from 1 to n
	{
		for i from 1 to m
		{
			if s[i]=t[j] then
				d[i,j]:=d[i-1,j-1]  //no operation required
			else
			d[i.j]:=minimum
			(
				d[i-1,j]+1, //a deletion
				d[i, j-1,j]+1, //an insertion
				d[i-1,j-1]+1, //a substitution
			)
		}
	}
	return d[m,n]
}