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Commit cd40c23

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flipping birds
1 parent b20b5ec commit cd40c23

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3 files changed

+170
-0
lines changed

3 files changed

+170
-0
lines changed

‎flipping-bits.js

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'use strict';
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const fs = require('fs');
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process.stdin.resume();
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process.stdin.setEncoding('utf-8');
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let inputString = '';
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let currentLine = 0;
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process.stdin.on('data', inputStdin => {
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inputString += inputStdin;
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});
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process.stdin.on('end', function () {
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inputString = inputString.replace(/\s*$/, '')
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.split('\n')
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.map(str => str.replace(/\s*$/, ''));
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main();
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});
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function readLine() {
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return inputString[currentLine++];
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}
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const getBinaryNumber = (N) => {
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let number = N.toString(2);
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let str = '';
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let n = 32 - number.length;
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while (n--){
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str+='0';
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}
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return str+number;
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}
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const flipbits = (bits) => {
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let str = '';
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let n = 0;
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while (n < bits.length){
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str+= (bits[n] === '0') ? '1': '0';
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n++;
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}
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return str;
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}
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function flippingBits(N) {
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let bits = getBinaryNumber(N);
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return parseInt(flipbits(bits), 2);
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}
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function main() {
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const ws = fs.createWriteStream(process.env.OUTPUT_PATH);
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const q = parseInt(readLine(), 10);
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for (let qItr = 0; qItr < q; qItr++) {
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const n = parseInt(readLine(), 10);
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const result = flippingBits(n);
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ws.write(result + '\n');
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}
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ws.end();
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}

‎maximizing-xor.js

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'use strict';
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const fs = require('fs');
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process.stdin.resume();
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process.stdin.setEncoding('utf-8');
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let inputString = '';
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let currentLine = 0;
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process.stdin.on('data', inputStdin => {
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inputString += inputStdin;
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});
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process.stdin.on('end', _ => {
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inputString = inputString.replace(/\s*$/, '')
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.split('\n')
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.map(str => str.replace(/\s*$/, ''));
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main();
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});
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function readLine() {
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return inputString[currentLine++];
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}
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// Complete the maximizingXor function below.
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function maximizingXor(l, r) {
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let rightIncrement = l;
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let start = l;
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let max = Number.MIN_VALUE;
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while (l <= r) {
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// console.log(l,rightIncrement)
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if ((l ^ rightIncrement) > max) {
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max = l ^ rightIncrement;
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}
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if (rightIncrement === r) {
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l++;
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rightIncrement = start;
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}
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rightIncrement++;
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}
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return max;
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}
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function main() {
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const ws = fs.createWriteStream(process.env.OUTPUT_PATH);
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const l = parseInt(readLine(), 10);
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const r = parseInt(readLine(), 10);
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let result = maximizingXor(l, r);
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ws.write(result + "\n");
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ws.end();
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}

‎sum-vs-xor.js

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'use strict';
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const fs = require('fs');
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process.stdin.resume();
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process.stdin.setEncoding('utf-8');
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let inputString = '';
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let currentLine = 0;
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process.stdin.on('data', function (inputStdin) {
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inputString += inputStdin;
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});
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process.stdin.on('end', function () {
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inputString = inputString.split('\n');
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main();
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});
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function readLine() {
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return inputString[currentLine++];
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}
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// Complete the sumXor function below.
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function sumXor(n) {
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let c = 0;
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while (n) {
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c += n % 2 ? 0 : 1;
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n = Math.floor(n/2);
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}
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c = Math.pow(2, c);
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return c;
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}
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function main() {
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const ws = fs.createWriteStream(process.env.OUTPUT_PATH);
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const n = parseInt(readLine().trim(), 10);
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const result = sumXor(n);
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ws.write(result + '\n');
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ws.end();
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}

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