Create 854-k-similar-strings.js

Author: everthis

854-k-similar-strings.js

@@ -0,0 +1,31 @@
+/**
+ * @param {string} A
+ * @param {string} B
+ * @return {number}
+ */
+const kSimilarity = function(A, B) {
+  if (A === B) return 0
+  let arr = [[B, 0]]
+  while (arr.length > 0) {
+    let len = arr.length
+    for (let i = 0; i < len; i++) {
+      let [cur, step] = arr.shift()
+      for (let i = 0; i < cur.length; i++) {
+        if (cur[i] === A[i]) continue
+        for (let j = i + 1; j < cur.length; j++) {
+          if (cur[j] !== A[i]) continue
+          let newStr =
+            cur.substring(0, i) +
+            cur[j] +
+            cur.substring(i + 1, j) +
+            cur[i] +
+            cur.substring(j + 1)
+          if (newStr === A) return step + 1
+          if (cur[i] === A[j]) arr.unshift([newStr, step + 1])
+          else arr.push([newStr, step + 1])
+        }
+        break
+      }
+    }
+  }
+}