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amazonNaxFreqDeviation.js
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amazonNaxFreqDeviation.js
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"use strict";
const fs = require("fs");
const { exit } = require("process");
process.stdin.resume();
process.stdin.setEncoding("utf-8");
let inputString = "";
let currentLine = 0;
process.stdin.on("data", function (inputStdin) {
inputString += inputStdin;
});
process.stdin.on("end", function () {
inputString = inputString.split("\n");
main();
});
function readLine() {
return inputString[currentLine++];
}
/*
* Complete the 'getMaxFreqDeviation' function below.
*
* The function is expected to return an INTEGER.
* The function accepts STRING s as parameter.
*/
const findFreqDeviation = (s) => {
const charsHistogram = {};
let [min, max, minChar, maxChar] = [Number.MAX_SAFE_INTEGER, 0, s[0], s[0]];
for (const char of s) {
charsHistogram[char] = (charsHistogram[char] || 0) + 1;
if (charsHistogram[char] > max) {
max = charsHistogram[char];
maxChar = char;
}
if (charsHistogram[char] <= min) {
minChar = char;
min = charsHistogram[char];
}
}
if (minChar === maxChar) return 0;
return max - charsHistogram[minChar];
};
function getMaxFreqDeviation(s) {
// Write your code here
let maxFreq = 0;
for (let i = 0; i < s.length; i++) {
for (let j = i + 1; j <= s.length; j++) {
const subStringMaxDeviation = findFreqDeviation(s.substring(i, j));
if (subStringMaxDeviation > maxFreq) {
maxFreq = subStringMaxDeviation;
}
}
}
return maxFreq;
}
function main() {
const ws = fs.createWriteStream(process.env.OUTPUT_PATH);
const s = readLine();
const result = getMaxFreqDeviation(s);
ws.write(result + "\n");
ws.end();
}
console.log(getMaxFreqDeviation("bbacccabab"));
console.log(getMaxFreqDeviation("aaaaab"));
exit();