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happy-ladybugs.js
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happy-ladybugs.js
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'use strict';
const fs = require('fs');
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.replace(/\s*$/, '')
.split('\n')
.map(str => str.replace(/\s*$/, ''));
main();
});
function readLine() {
return inputString[currentLine++];
}
// Complete the happyLadybugs function below.
function happyLadybugs(b) {
var obj = {};
let s1 = b;
for (var i = 0; i < s1.length; i++) {
if (typeof obj[s1[i]] === 'undefined') {
obj[s1[i]] = 1;
} else {
obj[s1[i]] = obj[s1[i]] + 1;
}
}
for (var i in obj) {
if (i !== '_' && obj[i] === 1)
return "NO";
}
if (b.indexOf('_') !== -1)
return "YES";
for (var i = 1; i < b.length; i++) {
if (b[i] === b[i - 1] || b[i] === b[i + 1])
continue;
else
return "NO";
}
return "YES";
}
function main() {
const ws = fs.createWriteStream(process.env.OUTPUT_PATH);
const g = parseInt(readLine(), 10);
for (let gItr = 0; gItr < g; gItr++) {
const n = parseInt(readLine(), 10);
const b = readLine();
let result = happyLadybugs(b);
ws.write(result + "\n");
}
ws.end();
}