Create 2399-check-distances-between-same-letters.js

Author: everthis

2399-check-distances-between-same-letters.js

@@ -0,0 +1,21 @@
+/**
+ * @param {string} s
+ * @param {number[]} distance
+ * @return {boolean}
+ */
+var checkDistances = function(s, distance) {
+  const hash = {}
+  const a = 'a'.charCodeAt(0)
+  const n = s.length
+  for(let i = 0; i < n; i++) {
+    if(hash[s[i]] == null) hash[s[i]] = []
+    hash[s[i]].push(i)
+  }
+  const keys = Object.keys(hash)
+  for(let i = 0; i < keys.length; i++) {
+    const k = keys[i]
+    const idx = k.charCodeAt(0) - a
+    if(hash[k][1] - hash[k][0] !== distance[idx] + 1) return false
+  }
+  return true
+};