Initial commit.HEADmain

1 files changed, 29 insertions, 0 deletions

diff --git a/top-interview-questions/easy/strings/04_valid_anagram.cc b/top-interview-questions/easy/strings/04_valid_anagram.cc
new file mode 100644
index 0000000..3ca6b7c
--- /dev/null
+++ b/top-interview-questions/easy/strings/04_valid_anagram.cc
@@ -0,0 +1,29 @@
+class Solution {
+public:
+    static void count(const string& s, int* counts) {
+        for (char c : s) {
+            counts[c]++;
+        }
+    }
+
+    bool isAnagram(string s, string t) {
+        if (s.size() != t.size()) {
+            return false;
+        }
+        // strings are equal length
+
+        int sCount[256] = {};
+        int tCount[256] = {};
+
+        count(s, sCount);
+        count(t, tCount);
+
+        for (char c : s) {
+            if (sCount[c] != tCount[c]) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+};