docs(*): add pending algorithm files

Author: guilhermebkel

algorithms/searching/hash-table/SeparateChainingHash.test.js

@@ -9,4 +9,3 @@ separateChainingHash.put("teste", 0)
 
 assert.deepEqual(separateChainingHash.get("Guilherme"), 123)
 assert.deepEqual(separateChainingHash.get("NotExistentKey"), null)
-

algorithms/string/Char.js

@@ -0,0 +1,11 @@
+class Char {
+	charAt(string, d) {
+		if (d < string.length) {
+			return string.charAt(d)
+		} else {
+			return -1
+		}
+	}
+}
+
+module.exports = Char