Add NextHigherSameBitCount algorithm (#5865)

src/test/java/com/thealgorithms/bitmanipulation/NextHigherSameBitCountTest.java

@@ -0,0 +1,22 @@
+package com.thealgorithms.bitmanipulation;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.CsvSource;
+
+class NextHigherSameBitCountTest {
+
+    @ParameterizedTest
+    @CsvSource({
+        "5, 6", // 101 -> 110
+        "7, 11", // 0111 -> 1011
+        "3, 5", // 011 -> 101
+        "12, 17", // 001100 -> 010001
+        "15, 23" // 01111 -> 10111
+    })
+    void
+    testNextHigherSameBitCount(int input, int expected) {
+        assertEquals(expected, NextHigherSameBitCount.nextHigherSameBitCount(input));
+    }
+}