chore(i8n,learn): processed translations

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

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+---
+id: 5a23c84252665b21eecc7e80
+title: Gray code
+challengeType: 5
+forumTopicId: 302276
+dashedName: gray-code
+---
+
+# --description--
+
+[Gray code](https://en.wikipedia.org/wiki/Gray code) is a form of binary encoding where transitions between consecutive numbers differ by only one bit.
+
+This is a useful encoding for reducing hardware data hazards with values that change rapidly and/or connect to slower hardware as inputs.
+
+It is also useful for generating inputs for [Karnaugh maps](https://en.wikipedia.org/wiki/Karnaugh map) in order from left to right or top to bottom.
+
+# --instructions--
+
+Create a function to encode a number to and decode a number from Gray code. The function should will have 2 parameters.
+
+The first would be a boolean. The function should encode for true and decode for false. The second parameter would be the number to be encoded/decoded.
+
+Display the normal binary representations, Gray code representations, and decoded Gray code values for all 5-bit binary numbers (0-31 inclusive, leading 0's not necessary).
+
+There are many possible Gray codes. The following encodes what is called "binary reflected Gray code."
+
+Encoding (MSB is bit 0, b is binary, g is Gray code):
+
+<pre>if b[i-1] = 1
+  g[i] = not b[i]
+else
+  g[i] = b[i]
+</pre>
+
+Or:
+
+<pre>g = b xor (b logically right shifted 1 time)
+</pre>
+
+Decoding (MSB is bit 0, b is binary, g is Gray code):
+
+<pre>b[0] = g[0]<br>
+for other bits:
+b[i] = g[i] xor b[i-1]
+</pre>
+
+# --hints--
+
+`gray` should be a function.
+
+```js
+assert(typeof gray == 'function');
+```
+
+`gray(true,177)` should return a number.
+
+```js
+assert(typeof gray(true, 177) == 'number');
+```
+
+`gray(true,177)` should return `233`.
+
+```js
+assert.equal(gray(true, 177), 233);
+```
+
+`gray(true,425)` should return `381`.
+
+```js
+assert.equal(gray(true, 425), 381);
+```
+
+`gray(true,870)` should return `725`.
+
+```js
+assert.equal(gray(true, 870), 725);
+```
+
+`gray(false,233)` should return `177`.
+
+```js
+assert.equal(gray(false, 233), 177);
+```
+
+`gray(false,381)` should return `425`.
+
+```js
+assert.equal(gray(false, 381), 425);
+```
+
+`gray(false,725)` should return `870`.
+
+```js
+assert.equal(gray(false, 725), 870);
+```
+
+# --seed--
+
+## --seed-contents--
+
+```js
+function gray(enc, number) {
+
+}
+```
+
+# --solutions--
+
+```js
+function gray(enc, number){
+  if(enc){
+      return number ^ (number >> 1);
+  }else{
+      let n = number;
+
+      while (number >>= 1) {
+          n ^= number;
+      }
+      return n;
+  }
+}
+```