Add bit manipulation section.

src/algorithms/math/bits/updateBit.js

@@ -0,0 +1,16 @@
+/**
+ * @param {number} number
+ * @param {number} bitPosition - zero based.
+ * @param {number} bitValue - 0 or 1.
+ * @return {number}
+ */
+export default function updateBit(number, bitPosition, bitValue) {
+  // Normalized bit value.
+  const bitValueNormalized = bitValue ? 1 : 0;
+
+  // Init clear mask.
+  const clearMask = ~(1 << bitPosition);
+
+  // Cleat bit value and then set it up to required value.
+  return (number & clearMask) | (bitValueNormalized << bitPosition);
+}