73 lines
2.0 KiB
JavaScript
73 lines
2.0 KiB
JavaScript
const fs = require('fs');
|
|
|
|
function extractDigits(line) {
|
|
// Mapping of digit words to their numeric values
|
|
const digitMap = {
|
|
zero: 0, one: 1, two: 2, three: 3, four: 4,
|
|
five: 5, six: 6, seven: 7, eight: 8, nine: 9
|
|
};
|
|
|
|
// Add single digit mappings
|
|
for (let i = 0; i <= 9; i++) {
|
|
digitMap[i.toString()] = i;
|
|
}
|
|
|
|
let digitsFound = [];
|
|
let i = 0;
|
|
while (i < line.length) {
|
|
for (const [word, digit] of Object.entries(digitMap)) {
|
|
if (line.startsWith(word, i)) {
|
|
digitsFound.push(digit);
|
|
i += word.length - 1;
|
|
break;
|
|
}
|
|
}
|
|
i++; // Move to the next character if no match
|
|
}
|
|
|
|
return digitsFound;
|
|
}
|
|
|
|
function extractCalibrationValue(line) {
|
|
const digits = extractDigits(line);
|
|
if (digits.length > 0) {
|
|
return parseInt(`${digits[0]}${digits[digits.length - 1]}`, 10);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
function calculateTotalCalibrationValue(filePath) {
|
|
const lines = fs.readFileSync(filePath, 'utf-8').split('\n');
|
|
return lines.reduce((sum, line) => sum + extractCalibrationValue(line), 0);
|
|
}
|
|
|
|
// Run the test
|
|
function test() {
|
|
console.warn("Starting Tests")
|
|
const testLines = [
|
|
"two1nine",
|
|
"eightwothree",
|
|
"abcone2threexyz",
|
|
"xtwone3four",
|
|
"4nineeightseven2",
|
|
"zoneight234",
|
|
"7pqrstsixteen"
|
|
];
|
|
const expectedResults = [29, 83, 13, 24, 42, 14, 76];
|
|
|
|
testLines.forEach((line, index) => {
|
|
const result = extractCalibrationValue(line);
|
|
console.assert(result === expectedResults[index], `Error in line '${line}': Expected ${expectedResults[index]}, got ${result}`);
|
|
console.log(`Line: '${line}', Calibration Value: ${result}`);
|
|
});
|
|
console.log("Finished Tests\n")
|
|
}
|
|
|
|
// Run the test function for verification
|
|
test();
|
|
|
|
// Calculate and print the total calibration value
|
|
const totalValue = calculateTotalCalibrationValue('../input.txt');
|
|
console.log(`Total Calibration Value from input.txt: ${totalValue}`);
|
|
|