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-rwxr-xr-xchallenge-252/roger-bell-west/javascript/ch-1.js26
-rwxr-xr-xchallenge-252/roger-bell-west/javascript/ch-2.js58
2 files changed, 84 insertions, 0 deletions
diff --git a/challenge-252/roger-bell-west/javascript/ch-1.js b/challenge-252/roger-bell-west/javascript/ch-1.js
new file mode 100755
index 0000000000..079ec31913
--- /dev/null
+++ b/challenge-252/roger-bell-west/javascript/ch-1.js
@@ -0,0 +1,26 @@
+#! /usr/bin/node
+
+"use strict"
+
+function specialnumbers(a) {
+ let t = 0;
+ a.forEach((n, i) => {
+ if (a.length % (i + 1) == 0) {
+ t += n * n;
+ }
+ });
+ return t;
+}
+
+if (specialnumbers([1, 2, 3, 4]) == 21) {
+ process.stdout.write("Pass");
+} else {
+ process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (specialnumbers([2, 7, 1, 19, 18, 3]) == 63) {
+ process.stdout.write("Pass");
+} else {
+ process.stdout.write("FAIL");
+}
+process.stdout.write("\n");
diff --git a/challenge-252/roger-bell-west/javascript/ch-2.js b/challenge-252/roger-bell-west/javascript/ch-2.js
new file mode 100755
index 0000000000..d5c713cae2
--- /dev/null
+++ b/challenge-252/roger-bell-west/javascript/ch-2.js
@@ -0,0 +1,58 @@
+#! /usr/bin/node
+
+"use strict"
+
+// by Frank Tan
+// https://stackoverflow.com/questions/38400594/javascript-deep-comparison
+function deepEqual(a,b)
+{
+ if( (typeof a == 'object' && a != null) &&
+ (typeof b == 'object' && b != null) )
+ {
+ var count = [0,0];
+ for( var key in a) count[0]++;
+ for( var key in b) count[1]++;
+ if( count[0]-count[1] != 0) {return false;}
+ for( var key in a)
+ {
+ if(!(key in b) || !deepEqual(a[key],b[key])) {return false;}
+ }
+ for( var key in b)
+ {
+ if(!(key in a) || !deepEqual(b[key],a[key])) {return false;}
+ }
+ return true;
+ }
+ else
+ {
+ return a === b;
+ }
+}
+
+function uniquesumzero(n) {
+ if (n == 1) {
+ return [0];
+ }
+ let p = Array(n - 1).fill().map((element, index) => index + 1);
+ p.push(-n * (n-1) / 2);
+ return p;
+}
+
+if (deepEqual(uniquesumzero(5), [1, 2, 3, 4, -10])) {
+ process.stdout.write("Pass");
+} else {
+ process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (deepEqual(uniquesumzero(3), [1, 2, -3])) {
+ process.stdout.write("Pass");
+} else {
+ process.stdout.write("FAIL");
+}
+process.stdout.write(" ");
+if (deepEqual(uniquesumzero(1), [0])) {
+ process.stdout.write("Pass");
+} else {
+ process.stdout.write("FAIL");
+}
+process.stdout.write("\n");