Create 1316-distinct-echo-substrings.js

Author: everthis

1316-distinct-echo-substrings.js

@@ -0,0 +1,19 @@
+/**
+ * @param {string} text
+ * @return {number}
+ */
+const distinctEchoSubstrings = function (text) {
+  const set = new Set()
+  for(let len = 1; len <= text.length / 2; len++) {
+    for(let l = 0, r = len, count = 0; l < text.length - len; l++, r++) {
+      if(text.charAt(l) === text.charAt(r)) count++
+      else count = 0
+
+      if(count === len) {
+        set.add(text.slice(l - len + 1, l + 1))
+        count--
+      }
+    }
+  }
+  return set.size
+}