Merge branch 'master' into devel

1 files changed, 32 insertions, 0 deletions

diff --git a/challenge-141/abigail/node/ch-2.js b/challenge-141/abigail/node/ch-2.js
new file mode 100644
index 0000000000..53b7b7ac44
--- /dev/null
+++ b/challenge-141/abigail/node/ch-2.js
@@ -0,0 +1,32 @@
+#!/usr/local/bin/node
+
+//
+// See ../README.md
+//
+
+//
+// Run as: node ch-2.js < input-file
+//
+
+function substrings (n, m, prefix, max) {
+    if (n . length == 0) {
+        return prefix > -1   &&
+               prefix < max  &&
+               prefix % m == 0 ? 1 : 0
+    }
+
+    let fc       = n . substr (0, 1)
+    let tail     = n . substr (1)
+    let n_prefix = 10 * (prefix == -1 ? 0 : prefix) + + n . substr (0, 1)
+
+    return substrings (tail, m, n_prefix, max) +
+           substrings (tail, m, prefix,   max);
+}
+
+  require ('readline')
+. createInterface ({input: process . stdin})   
+. on              ('line', line => {
+    let [n, m] = line . split (" ")
+    console . log (substrings (n, +m, -1, +n))
+})
+