2020 day 1 and 2 (:

2020/01/input.txt

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+1408
+1335
+1648
+1458
+1627
+1928
+1967
+1827
+1606
+1569
+1893
+1866
+1768
+1795
+1264
+1684
+1552
+1343
+1917
+1675
+1731
+1800
+1413
+1879
+1664
+1350
+1694
+1372
+1851
+1743
+1735
+833
+748
+1265
+1885
+1874
+2007
+1661
+1895
+1537
+1622
+1355
+762
+1533
+1771
+1966
+1978
+1572
+1833
+1969
+1805
+1820
+1536
+1911
+2009
+1817
+1268
+1998
+1759
+2008
+2002
+1187
+1896
+1850
+1734
+1849
+1589
+1302
+444
+1280
+1590
+1959
+902
+1709
+1932
+1277
+1561
+1301
+1831
+1286
+1693
+1927
+1467
+1384
+1662
+1401
+716
+1634
+1785
+1801
+1380
+1971
+1292
+1828
+185
+1560
+1322
+1787
+1545
+1395
+1445
+1807
+1750
+1867
+1433
+1894
+1821
+1983
+1578
+1669
+1610
+1549
+1556
+1346
+1616
+1999
+1925
+1387
+1659
+1457
+1237
+1808
+69
+1906
+1449
+1723
+1974
+1919
+1914
+1338
+1305
+1347
+1903
+1929
+1712
+1607
+1400
+197
+1575
+1282
+1296
+1737
+1396
+2003
+1453
+1660
+1646
+1991
+1565
+1416
+1995
+1784
+1367
+1420
+1593
+1654
+1306
+1916
+1797
+1594
+1471
+1405
+1698
+1541
+1900
+1963
+1696
+1574
+1853
+511
+1603
+1889
+1940
+1843
+1979
+272
+1726
+1294
+1877
+1441
+1697
+1644
+1956
+1689
+1665
+1631
+1717
+1781
+1450
+1618
+1317
+1799
+1950
+1722
+1960
+1628
+1941
+1977
+1775
+1529

2020/01/part1.js

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+const fs = require('fs');
+
+let data = fs.readFileSync('input.txt', 'utf-8');
+let lines = data.split('\n').map(x => parseInt(x));
+
+let done = false
+lines.forEach((number, index) => {
+  if (done) {return}
+  lines.forEach((number2, index2) => {
+  if (done) {return}
+    if (index != index2) {
+    //console.log(number, number2)
+      if (number + number2 == 2020){
+        done = true
+        console.log(number, number2, number*number2)
+      }
+    }
+  })
+})

2020/01/part2.js

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+const fs = require('fs');
+
+let data = fs.readFileSync('input.txt', 'utf-8');
+let lines = data.split('\n').map(x => parseInt(x));
+
+let done = false
+lines.forEach((number, index) => {
+  if (done) {return}
+  lines.forEach((number2, index2) => {
+  if (done) {return}
+    lines.forEach((number3, index3) => {
+    if (done) {return}
+      if (index != index2 && index != index3 && index2 != index3) {
+      //console.log(number, number2)
+        if (number + number2 + number3 == 2020){
+          done = true
+          console.log(number, number2, number3, number*number2*number3)
+        }
+      }
+    })
+  })
+})

2020/02/part1.js

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+const fs = require('fs');
+let data = fs.readFileSync('input.txt', 'utf-8');
+let lines = data.split('\n').map(x => x.split(" "));
+let count = 0
+for (let i = 0; i < lines.length; i++) {
+  let line = lines[i]
+  let lim = line[0].split("-")
+  let char = line[1].substring(0, 1)
+  let pass = line[2]
+  let match = pass.match(new RegExp(char, 'g'))
+  if (!match) { continue }
+  let matches = match.length
+  if (matches < lim[0] || matches > lim[1]) { continue }
+  console.log(pass)
+  count++
+}
+console.log(count)

2020/02/part2.js

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+const fs = require('fs');
+
+let data = fs.readFileSync('input.txt', 'utf-8');
+let lines = data.split('\n').map(x => x.split(" "));
+let count = 0
+for ( let i = 0; i < lines.length; i++){
+  let line = lines[i]
+  let lim = line[0].split("-")
+  let char = line[1].substring(0,1)
+  let pass = line[2]
+  let one = (pass.charAt(lim[0]-1) == char)
+  let other = (pass.charAt(lim[1]-1) == char)
+  if (one^other){
+    console.log(pass)
+    count++
+  }
+}
+console.log(count)