Create 1160_Find_Words_That_Can_Be_Formed_by_Characters.java

1160_Find_Words_That_Can_Be_Formed_by_Characters.java

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+// id: 1160
+// Name: Find Words That Can Be Formed by Characters
+// link: https://leetcode.com/problems/find-words-that-can-be-formed-by-characters/
+// Difficulty: Easy
+
+class Solution {
+    int [] map = new int[26];
+    int [] wordMap;
+    public int countCharacters(String[] words, String chars) {
+        for (int i = 0; i < chars.length(); i++) {
+            map[chars.charAt(i)-'a']++;
+        }
+
+        int result = 0;
+        for (String word: words) {
+            if (matches(word)) {
+                result += word.length();
+            }
+        }
+
+
+        return result;
+    }
+
+    private boolean matches (String word) {
+        wordMap = new int[26];
+
+        for (int i = 0; i < word.length(); i++) {
+            int c = word.charAt(i) - 'a';
+            wordMap[c]++;
+            if (wordMap[c]>map[c]) return false;
+        }
+
+        return true;
+    }
+}