Initial data commit

Task/Levenshtein-distance/TypeScript/levenshtein-distance.ts

@@ -0,0 +1,14 @@
+  function levenshtein(a: string, b: string): number {
+    const m: number = a.length,
+      n: number = b.length;
+    let t: number[] = [...Array(n + 1).keys()],
+      u: number[] = [];
+    for (let i: number = 0; i < m; i++) {
+      u = [i + 1];
+      for (let j: number = 0; j < n; j++) {
+        u[j + 1] = a[i] === b[j] ? t[j] : Math.min(t[j], t[j + 1], u[j]) + 1;
+      }
+      t = u;
+    }
+    return u[n];
+  }