add: 只出现一次的数字等

2019-03-10 16:43:04 +08:00
parent 930ff1be11
commit 8239e7afd5
106 changed files with 7978 additions and 0 deletions
--- a/src/string/unique-characters.js
+++ b/src/string/unique-characters.js
@ -0,0 +1,3 @@
+export const isUnique = (str) => {
+  return new Set(str.split('')).size === str.length
+}