update snippets 78 - 96

snippets/primes.md

@@ -1,4 +1,4 @@
-### primes 
+### primes
 
 Generates primes up to a given number, using the Sieve of Eratosthenes.
 
@@ -6,11 +6,14 @@ Generate an array from `2` to the given number. Use `Array.filter()` to filter o
 
 ```js
 const primes = num => {
-  let arr = Array.from({length: num - 1}).map((x, i) => i + 2),
-    sqroot = Math.floor(Math.sqrt(num)),
-    numsTillSqroot = Array.from({length: sqroot - 1}).map((x, i) => i + 2);
-  numsTillSqroot.forEach(x => arr = arr.filter(y => ((y % x) !== 0) || (y == x)));
+  let arr =  Array.from({length:num-1}).map((x,i)=> i+2),
+    sqroot  = Math.floor(Math.sqrt(num)),
+    numsTillSqroot  = Array.from({length:sqroot-1}).map((x,i)=> i+2);
+  numsTillSqroot.forEach(x => arr = arr.filter(y => ((y%x)!==0)||(y==x)));
   return arr;
-};
-// primes(10) -> [2,3,5,7]
+}
+```
+
+```js
+primes(10) // [2,3,5,7]
 ```