beautiful-pairs

Author: prabaprakash

beautiful-pairs.js

@@ -0,0 +1,56 @@
+'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++];
+}
+
+function del(array, item) {
+    const index = array.indexOf(item);
+    if (index > -1) {
+        array.splice(index, 1);
+    }
+    return array;
+}
+// Complete the beautifulPairs function below.
+function beautifulPairs(A, B) {
+    B.forEach(x => del(A,x));
+    if(A.length === 1) return B.length;
+    else if(A.length === 0) return B.length -1;
+    else return (B.length - A.length) +1;
+}
+
+function main() {
+    const ws = fs.createWriteStream(process.env.OUTPUT_PATH);
+
+    const n = parseInt(readLine(), 10);
+
+    const A = readLine().split(' ').map(ATemp => parseInt(ATemp, 10));
+
+    const B = readLine().split(' ').map(BTemp => parseInt(BTemp, 10));
+
+    let result = beautifulPairs(A, B);
+
+    ws.write(result + "\n");
+
+    ws.end();
+}