mirror of
https://github.com/Combodo/iTop.git
synced 2026-03-11 20:14:14 +01:00
e371db846a
Current file header is : /*! showdown v 2.0.0-alpha1 - 25-09-2018 */ Official 2.0.0-alpha doesn't match neither on content nor date :( Considering date we would be at 1.8.7, but it is also quite different (and has vulnerabilities) In consequence switching to 2.0.0.
35 lines
1.0 KiB
JavaScript
35 lines
1.0 KiB
JavaScript
export function levenshtein(a, b) {
|
|
if (a.length === 0)
|
|
return b.length;
|
|
if (b.length === 0)
|
|
return a.length;
|
|
const matrix = [];
|
|
let i;
|
|
for (i = 0; i <= b.length; i++) {
|
|
matrix[i] = [i];
|
|
}
|
|
let j;
|
|
for (j = 0; j <= a.length; j++) {
|
|
matrix[0][j] = j;
|
|
}
|
|
for (i = 1; i <= b.length; i++) {
|
|
for (j = 1; j <= a.length; j++) {
|
|
if (b.charAt(i - 1) === a.charAt(j - 1)) {
|
|
matrix[i][j] = matrix[i - 1][j - 1];
|
|
}
|
|
else {
|
|
if (i > 1 &&
|
|
j > 1 &&
|
|
b.charAt(i - 2) === a.charAt(j - 1) &&
|
|
b.charAt(i - 1) === a.charAt(j - 2)) {
|
|
matrix[i][j] = matrix[i - 2][j - 2] + 1;
|
|
}
|
|
else {
|
|
matrix[i][j] = Math.min(matrix[i - 1][j - 1] + 1, Math.min(matrix[i][j - 1] + 1, matrix[i - 1][j] + 1));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return matrix[b.length][a.length];
|
|
}
|