chore(i8n,learn): processed translations

curriculum/challenges/espanol/10-coding-interview-prep/rosetta-code/identity-matrix.md

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+---
+id: 5a23c84252665b21eecc7eb1
+title: Identity matrix
+challengeType: 5
+forumTopicId: 302290
+dashedName: identity-matrix
+---
+
+# --description--
+
+An *identity matrix* is a square matrix of size \\( n \\times n \\), where the diagonal elements are all `1`s (ones), and all the other elements are all `0`s (zeroes).
+
+<ul>
+  <li style='list-style: none;'>\(\displaystyle I_{n}=\begin{bmatrix} 1 &#x26; 0 &#x26; 0 \cr 0 &#x26; 1 &#x26; 0 \cr 0 &#x26; 0 &#x26; 1 \cr \end{bmatrix}\)</li>
+</ul>
+
+# --instructions--
+
+Write a function that takes a number `n` as a parameter and returns the identity matrix of order \\( n \\times n \\).
+
+# --hints--
+
+`idMatrix` should be a function.
+
+```js
+assert(typeof idMatrix == 'function');
+```
+
+`idMatrix(1)` should return an array.
+
+```js
+assert(Array.isArray(idMatrix(1)));
+```
+
+`idMatrix(1)` should return `[ [ 1 ] ]`.
+
+```js
+assert.deepEqual(idMatrix(1), results[0]);
+```
+
+`idMatrix(2)` should return `[ [ 1, 0 ], [ 0, 1 ] ]`.
+
+```js
+assert.deepEqual(idMatrix(2), results[1]);
+```
+
+`idMatrix(3)` should return `[ [ 1, 0, 0 ], [ 0, 1, 0 ], [ 0, 0, 1 ] ]`.
+
+```js
+assert.deepEqual(idMatrix(3), results[2]);
+```
+
+`idMatrix(4)` should return `[ [ 1, 0, 0, 0 ], [ 0, 1, 0, 0 ], [ 0, 0, 1, 0 ], [ 0, 0, 0, 1 ] ]`.
+
+```js
+assert.deepEqual(idMatrix(4), results[3]);
+```
+
+# --seed--
+
+## --after-user-code--
+
+```js
+let results=[[ [ 1 ] ],
+[ [ 1, 0 ], [ 0, 1 ] ],
+[ [ 1, 0, 0 ], [ 0, 1, 0 ], [ 0, 0, 1 ] ],
+[ [ 1, 0, 0, 0 ], [ 0, 1, 0, 0 ], [ 0, 0, 1, 0 ], [ 0, 0, 0, 1 ] ]]
+```
+
+## --seed-contents--
+
+```js
+function idMatrix(n) {
+
+}
+```
+
+# --solutions--
+
+```js
+function idMatrix(n) {
+    return Array.apply(null, new Array(n)).map(function (x, i, xs) {
+        return xs.map(function (_, k) {
+            return i === k ? 1 : 0;
+        })
+    });
+}
+```