advent-of-code

commit 32356ba5b19ce392bb6c5884b3793279b7525b68
parent 7a4b8b331576881e4e16e21ba140f5894590bc89
Author: finwo <finwo@pm.me>
Date:   Tue, 15 Nov 2022 16:51:58 +0100

Added 2015/04 solution

Diffstat:
A
2015/day-04/index.js
 | 
11
+++++++++++
M
2015/package-lock.json
 | 
30
++++++++++++++++++++++++++++++
M
2015/package.json
 | 
1
+

3 files changed, 42 insertions(+), 0 deletions(-)
diff --git a/2015/day-04/index.js b/2015/day-04/index.js
@@ -0,0 +1,11 @@
+const fs = require('fs');
+const { hex_md5 } = require('@finwo/digest-md5');
+
+const secret     = fs.readFileSync('input', 'utf-8').trim();
+const difficulty = 6;
+const matcher    = '0'.repeat(difficulty);
+let   nonce      = 0;
+
+while(hex_md5(secret + nonce).substr(0,difficulty) != matcher) nonce++;
+
+console.log({ secret, hash: hex_md5(secret + nonce), nonce });
diff --git a/2015/package-lock.json b/2015/package-lock.json
@@ -9,9 +9,26 @@
       "version": "1.0.0",
       "license": "ISC",
       "dependencies": {
+        "@finwo/digest-md5": "^1.0.2",
         "through2": "^4.0.2"
       }
     },
+    "node_modules/@finwo/digest-common": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@finwo/digest-common/-/digest-common-1.1.0.tgz",
+      "integrity": "sha512-8O+Py3CsilUHT6IetstrFJnTcGDaQpfWfh3o+idEFLrsJRrx/G5eI9rY1uMVa32EteQeRW/kBg8KIn5zu7HMHg=="
+    },
+    "node_modules/@finwo/digest-md5": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/@finwo/digest-md5/-/digest-md5-1.0.2.tgz",
+      "integrity": "sha512-Z3JfmDSB+lBsjIyq7HzATLsUoGnuc39V2sLiVQKbi4ef0fBwqo1BjE9zmjCW8rqXTkraTNi6qZVsfgV0mYQGGA==",
+      "dependencies": {
+        "@finwo/digest-common": "^1.1.0"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/finwo"
+      }
+    },
     "node_modules/inherits": {
       "version": "2.0.4",
       "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
@@ -72,6 +89,19 @@
     }
   },
   "dependencies": {
+    "@finwo/digest-common": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@finwo/digest-common/-/digest-common-1.1.0.tgz",
+      "integrity": "sha512-8O+Py3CsilUHT6IetstrFJnTcGDaQpfWfh3o+idEFLrsJRrx/G5eI9rY1uMVa32EteQeRW/kBg8KIn5zu7HMHg=="
+    },
+    "@finwo/digest-md5": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/@finwo/digest-md5/-/digest-md5-1.0.2.tgz",
+      "integrity": "sha512-Z3JfmDSB+lBsjIyq7HzATLsUoGnuc39V2sLiVQKbi4ef0fBwqo1BjE9zmjCW8rqXTkraTNi6qZVsfgV0mYQGGA==",
+      "requires": {
+        "@finwo/digest-common": "^1.1.0"
+      }
+    },
     "inherits": {
       "version": "2.0.4",
       "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
diff --git a/2015/package.json b/2015/package.json
@@ -9,6 +9,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
+    "@finwo/digest-md5": "^1.0.2",
     "through2": "^4.0.2"
   }
 }