JavaScript Program to Check if a Number has Bits in an Alternate Pattern Last Updated : 08 May, 2024 Summarize Comments Improve Suggest changes Share Like Article Like Report JavaScript can be used to assess whether a given number follows an alternating pattern in its binary representation. By examining the binary digits of the number, one can determine if the sequence alternates between 0s and 1s, aiding in understanding the binary structure of the input. Examples: Input : 15Output : NoExplanation: Binary representation of 15 is 1111.Input : 10Output : YesExplanation: Binary representation of 10 is 1010.Below are the methods to check if a number has bits in an alternate pattern: Table of Content Using binary conversionUsing bitwise manipulationUsing binary conversionIn this approach iterates through each bit of the number's binary representation, comparing each bit with the previous one. If any two adjacent bits are the same, it returns false; otherwise, it returns true. Example: To demonstrate checking if a number has bits in an alternate pattern or not. JavaScript function hasAltBitPattern(n) { let prev = n % 2; n = Math.floor(n / 2); while (n > 0) { let curr = n % 2; if (curr === prev) return false; prev = curr; n = Math.floor(n / 2); } return true; } let numToCheck = 10; if (hasAltBitPattern(numToCheck)) console.log("Yes"); else console.log("No"); OutputYes Time Complexity: O(log2n) Auxiliary Space: O(1) Using bitwise manipulationIn this approach we perform a bitwise AND operation between the number and its right-shifted version by one bit. If the result is zero, it means there are no common set bits between adjacent bits, indicating an alternate bit pattern. Otherwise, it returns false. Example: To demonstrate checking if a number has bits in an alternate pattern. JavaScript function hasAltBitPattern(n) { if (n > 1) { return (n & (n >> 1)) === 0; } else { return false; } } let numToCheck = 100; if (hasAltBitPattern(numToCheck)) { console.log("Yes"); } else { console.log("No"); } OutputYes Time Complexity: O(1) Auxiliary Space: O(1) Comment More infoAdvertise with us A abhay94517 Follow Improve Article Tags : JavaScript Web Technologies JavaScript-Program Similar Reads Non-linear Components In electrical circuits, Non-linear Components are electronic devices that need an external power source to operate actively. Non-Linear Components are those that are changed with respect to the voltage and current. Elements that do not follow ohm's law are called Non-linear Components. Non-linear Co 11 min read JavaScript Tutorial JavaScript is a programming language used to create dynamic content for websites. It is a lightweight, cross-platform, and single-threaded programming language. 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