Add ParityCheck algorithm (#5704)

src/main/java/com/thealgorithms/bitmanipulation/ParityCheck.java

@@ -0,0 +1,34 @@
+package com.thealgorithms.bitmanipulation;
+
+/**
+ * The ParityCheck class provides a method to check the parity of a given number.
+ * <p>
+ * Parity is a mathematical term that describes the property of an integer's binary representation.
+ * The parity of a binary number is the number of 1s in its binary representation.
+ * If the number of 1s is even, the parity is even; otherwise, it is odd.
+ * <p>
+ * For example, the binary representation of 5 is 101, which has two 1s, so the parity of 5 is even.
+ * The binary representation of 6 is 110, which has two 1s, so the parity of 6 is even.
+ * The binary representation of 7 is 111, which has three 1s, so the parity of 7 is odd.
+ *
+ * @author Hardvan
+ */
+public final class ParityCheck {
+    private ParityCheck() {
+    }
+
+    /**
+     * This method checks the parity of the given number.
+     *
+     * @param n the number to check the parity of
+     * @return true if the number has even parity, false otherwise
+     */
+    public static boolean checkParity(int n) {
+        int count = 0;
+        while (n > 0) {
+            count += n & 1;
+            n >>= 1;
+        }
+        return count % 2 == 0;
+    }
+}