chore(i18n,learn): processed translations (#44851)

curriculum/challenges/japanese/10-coding-interview-prep/project-euler/problem-280-ant-and-seeds.md

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+---
+id: 5900f4841000cf542c50ff97
+title: 'Problem 280: Ant and seeds'
+challengeType: 5
+forumTopicId: 301931
+dashedName: problem-280-ant-and-seeds
+---
+
+# --description--
+
+A laborious ant walks randomly on a 5x5 grid. The walk starts from the central square. At each step, the ant moves to an adjacent square at random, without leaving the grid; thus there are 2, 3 or 4 possible moves at each step depending on the ant's position.
+
+At the start of the walk, a seed is placed on each square of the lower row. When the ant isn't carrying a seed and reaches a square of the lower row containing a seed, it will start to carry the seed. The ant will drop the seed on the first empty square of the upper row it eventually reaches.
+
+What's the expected number of steps until all seeds have been dropped in the top row? Give your answer rounded to 6 decimal places.
+
+# --hints--
+
+`antAndSeeds()` should return `430.088247`.
+
+```js
+assert.strictEqual(antAndSeeds(), 430.088247);
+```
+
+# --seed--
+
+## --seed-contents--
+
+```js
+function antAndSeeds() {
+
+  return true;
+}
+
+antAndSeeds();
+```
+
+# --solutions--
+
+```js
+// solution required
+```