Solutions for week 139

2 files changed, 57 insertions, 0 deletions

diff --git a/challenge-139/abigail/node/ch-1.js b/challenge-139/abigail/node/ch-1.js
new file mode 100644
index 0000000000..f45be6188c
--- /dev/null
+++ b/challenge-139/abigail/node/ch-1.js
@@ -0,0 +1,20 @@
+#!/usr/local/bin/node
+
+//
+// See ../README.md
+//
+
+//
+// Run as: node ch-1.js < input-file
+//
+
+  require ('readline')
+. createInterface ({input: process . stdin})   
+. on              ('line', line => {
+    console . log (line . match (/[0-9]+/gi) . reduce ((sorted, _, i, list) => {
+        if (i > 0 && list [i - 1] > list [i]) {sorted = 0}
+        return sorted},
+        1)
+    )
+})
+
diff --git a/challenge-139/abigail/node/ch-2.js b/challenge-139/abigail/node/ch-2.js
new file mode 100644
index 0000000000..88f78d7b99
--- /dev/null
+++ b/challenge-139/abigail/node/ch-2.js
@@ -0,0 +1,37 @@
+#!/usr/local/bin/node
+
+//
+// See ../README.md
+//
+
+//
+// Run as: node ch-2.js
+//
+
+let BASE  = 10
+let COUNT =  5
+
+function is_long (number) {
+    let seen = Array (number) . fill (0)
+    let rest = 0
+    for (let i = 2; i <= number; i ++) {
+        rest = (rest * BASE + BASE - 1) % number
+        if (seen [rest] == 1) {
+            return 0
+        }
+        seen [rest] = 1
+    }
+    return 1
+}
+
+let number = 1
+while (COUNT > 0) {
+    number ++
+    if (BASE % number == 0) {
+        continue
+    }
+    if (is_long (number)) {
+        console . log (number)
+        COUNT --
+    }
+}