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authorVincent Ambo <mail@tazj.in>2021-12-13T22·51+0300
committerVincent Ambo <mail@tazj.in>2021-12-13T23·15+0300
commit019f8fd2113df4c5247c3969c60fd4f0e08f91f7 (patch)
tree76a857f61aa88f62a30e854651e8439db77fd0ea /users/wpcarro/scratch/deepmind/part_two/reverse-string-in-place.ts
parent464bbcb15c09813172c79820bcf526bb10cf4208 (diff)
parent6123e976928ca3d8d93f0b2006b10b5f659eb74d (diff)
subtree(users/wpcarro): docking briefcase at '24f5a642' r/3226
git-subtree-dir: users/wpcarro
git-subtree-mainline: 464bbcb15c09813172c79820bcf526bb10cf4208
git-subtree-split: 24f5a642af3aa1627bbff977f0a101907a02c69f
Change-Id: I6105b3762b79126b3488359c95978cadb3efa789
Diffstat (limited to 'users/wpcarro/scratch/deepmind/part_two/reverse-string-in-place.ts')
-rw-r--r--users/wpcarro/scratch/deepmind/part_two/reverse-string-in-place.ts13
1 files changed, 13 insertions, 0 deletions
diff --git a/users/wpcarro/scratch/deepmind/part_two/reverse-string-in-place.ts b/users/wpcarro/scratch/deepmind/part_two/reverse-string-in-place.ts
new file mode 100644
index 000000000000..d714dfef997f
--- /dev/null
+++ b/users/wpcarro/scratch/deepmind/part_two/reverse-string-in-place.ts
@@ -0,0 +1,13 @@
+// Reverse array of characters, `xs`, mutatively.
+function reverse(xs: Array<string>) {
+  let i: number = 0;
+  let j: number = xs.length - 1;
+
+  while (i < j) {
+    let tmp = xs[i];
+    xs[i] = xs[j]
+    xs[j] = tmp
+    i += 1
+    j -= 1
+  }
+}