feat: Valid Anagram DaleStudy#218

Author: donghyeon95

valid-anagram/donghyeon95.java

@@ -0,0 +1,27 @@
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+
+class Solution {
+	public boolean isAnagram(String s, String t) {
+		boolean result = false;
+
+		char[] chars = s.toCharArray();
+		Map<Character, Integer> counter = new HashMap<>();
+		for (char c: chars) {
+			counter.put(c, counter.getOrDefault(c, 0)+1);
+		}
+
+		char[] tChars = t.toCharArray();
+		for (char c: tChars) {
+			if (!counter.containsKey(c)) return false;
+			counter.put(c, counter.get(c)-1);
+
+			if (counter.get(c) == 0)
+				counter.remove(c);
+		}
+
+		return counter.isEmpty();
+	}
+}
+