Merge pull request #2427 from jacoby/master

JS and Blog

3 files changed, 48 insertions, 0 deletions

diff --git a/challenge-080/dave-jacoby/blog.txt b/challenge-080/dave-jacoby/blog.txt
new file mode 100644
index 0000000000..95ae4e56fd
--- /dev/null
+++ b/challenge-080/dave-jacoby/blog.txt
@@ -0,0 +1 @@
+https://jacoby.github.io/2020/09/30/challenge-80.html
diff --git a/challenge-080/dave-jacoby/node/ch-1.js b/challenge-080/dave-jacoby/node/ch-1.js
new file mode 100755
index 0000000000..6e23ec8521
--- /dev/null
+++ b/challenge-080/dave-jacoby/node/ch-1.js
@@ -0,0 +1,25 @@
+"use strict"
+
+console.log( spnm( [5, 2, -2, 0 ] ));
+console.log( spnm( [1, 8, -1 ] ));
+console.log( spnm( [2, 0, -1 ] ));
+console.log( spnm( Array(12).fill().map((n, i) => 1 + i) ));
+
+function spnm ( array ) {
+  let list = array.filter( i => i > 0 );
+  let max = 1 + Math.max(...list);
+  let range = Array(max).fill().map((n, i) => 1 + i) ;
+  let hash = {};
+
+  for ( let i in list ) {
+    let n = list[i];
+    hash[n]=1;
+  }
+
+  for ( let i in range ) {
+    let n = range[i];
+    if ( !hash[n] ) { return n }
+  }
+  return -1
+}
+
diff --git a/challenge-080/dave-jacoby/node/ch-2.js b/challenge-080/dave-jacoby/node/ch-2.js
new file mode 100755
index 0000000000..a47fe0eb2b
--- /dev/null
+++ b/challenge-080/dave-jacoby/node/ch-2.js
@@ -0,0 +1,22 @@
+"use strict"
+
+console.log( candy_count( [1, 2, 2] ) );
+console.log( candy_count( [1, 4, 3, 2] ) );
+
+
+function candy_count( candidates ) {
+    let total = 0;
+    console.log( candidates );
+    for ( let i in candidates ) {
+        i = parseInt(i); // string by default
+        let v = candidates[i];
+        let prev = candidates[i-1] || 0;
+        let next = candidates[i+1] || 0;
+        total ++;
+        if ( v > prev && prev != 0 ) { total ++ }
+        if ( v > next && next != 0 ) { total ++ }
+    }
+    return total;
+}
+
+