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45 lines
887 B
JavaScript
45 lines
887 B
JavaScript
4 years ago
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const { readInput } = require("./util");
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const { lines } = readInput("input");
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class Buffer {
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constructor(size = 25) {
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this.buffer = [];
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this.size = size;
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}
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push(val) {
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this.buffer.push(val);
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if (this.buffer.length > this.size) {
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this.buffer.shift();
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}
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}
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isValid(val) {
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if (this.buffer.length < this.size) {
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return true;
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}
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for (let a = 0; a < this.buffer.length; a++) {
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const wanted = val - this.buffer[a];
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for (let b = a + 1; b < this.buffer.length; b++) {
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if (this.buffer[b] === wanted) {
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return true;
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}
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}
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}
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return false;
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}
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}
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const buffer = new Buffer(25);
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for (const line of lines) {
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const val = parseInt(line);
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console.log(buffer.buffer, val, buffer.isValid(val));
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if (!buffer.isValid(val)) {
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console.log(val);
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break;
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}
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buffer.push(parseInt(line));
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}
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