JS10 Day 6: Bitwise Operators

개요

JS10 Day 6: Bitwise Operators

• https://www.hackerrank.com/challenges/js10-bitwise/problem

해커랭크 10 Days of Javascript

#	문제	비고
6-7 Day e
18	JS10 Day 6: Bitwise Operators
19	JS10 Day 6: JavaScript Dates
20	JS10 Day 7: Regular Expressions I
21	JS10 Day 7: Regular Expressions II
22	JS10 Day 7: Regular Expressions III

---

'use strict';

process.stdin.resume();
process.stdin.setEncoding('utf-8');

let inputString = '';
let currentLine = 0;

process.stdin.on('data', inputStdin => {
    inputString += inputStdin;
});

process.stdin.on('end', _ => {
    inputString = inputString.trim().split('\n').map(string => {
        return string.trim();
    });
    
    main();    
});

function readLine() {
    return inputString[currentLine++];
}

function getMaxLessThanK(n, k) {
    let max = 0;
    let result;
    for(let i=1; i<n; i++) {
        for(let j=i+1; j<=n; j++) {
            result = i & j;
            if( result >= k ) continue;
            if( result > max ) max = result;
        }
    }
    return max;
}

function main() {
    const q = +(readLine());
    
    for (let i = 0; i < q; i++) {
        const [n, k] = readLine().split(' ').map(Number);
        
        console.log(getMaxLessThanK(n, k));
    }
}