2022-08-26 update: added "Reordered Power of 2" (#74)

Author: fartem

src/main/java/com/smlnskgmail/jaman/leetcodejava/medium/ReorderedPowerOf2.java

@@ -0,0 +1,33 @@
+package com.smlnskgmail.jaman.leetcodejava.medium;
+
+import java.util.Arrays;
+
+// https://leetcode.com/problems/reordered-power-of-2/
+public class ReorderedPowerOf2 {
+
+    private final int input;
+
+    public ReorderedPowerOf2(int input) {
+        this.input = input;
+    }
+
+    public boolean solution() {
+        int[] arr = count(input);
+        for (int i = 0; i < 31; i++) {
+            if (Arrays.equals(arr, count(1 << i))) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private int[] count(int n) {
+        int[] result = new int[10];
+        while (n > 0) {
+            result[n % 10]++;
+            n /= 10;
+        }
+        return result;
+    }
+
+}

src/test/java/com/smlnskgmail/jaman/leetcodejava/medium/ReorderedPowerOf2Test.java

@@ -0,0 +1,14 @@
+package com.smlnskgmail.jaman.leetcodejava.medium;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertTrue;
+
+public class ReorderedPowerOf2Test {
+
+    @Test
+    public void defaultTest() {
+        assertTrue(new ReorderedPowerOf2(1).solution());
+    }
+
+}