added PigeonHoleSort algorithm

Sorts/PigeonHoleSort.js

@@ -6,37 +6,33 @@ https://en.wikipedia.org/wiki/Pigeonhole_sort
 * (n) and the length of the range of possible key values (N)
 * are approximately the same.
  */
-function pigeonhole_sort(arr){
+function pigeonhole_sort (arr) {
-    var min = arr[0];
+  let min = arr[0]
-    var max = arr[0];
+  let max = arr[0]
-
-    for(let i=0; i<arr.length; i++)
-    {
-        if(arr[i] > max)
-            max = arr[i];
-        if(arr[i] < min)
-            min = arr[i];
-    }
-    console.log(max);
-    console.log(min);
-
-    var range = max - min + 1;
-    let pigeonhole = Array(range).fill(0);
-
-    for(let i = 0; i<arr.length; i++){
-        pigeonhole[arr[i] - min]++;
-    }
-
-    let index = 0;
-
-    for(let j = 0; j<range; j++){
-        while(pigeonhole[j]-->0){
-            arr[index++]=j+min;
-        }
 
+  for (let i = 0; i < arr.length; i++) {
+    if (arr[i] > max) { max = arr[i] }
+    if (arr[i] < min) { min = arr[i] }
+  }
+  console.log(max)
+  console.log(min)
+
+  const range = max - min + 1
+  const pigeonhole = Array(range).fill(0)
+
+  for (let i = 0; i < arr.length; i++) {
+    pigeonhole[arr[i] - min]++
+  }
+
+  let index = 0
+
+  for (let j = 0; j < range; j++) {
+    while (pigeonhole[j]-- > 0) {
+      arr[index++] = j + min
     }
+  }
 }
-//Driver code
+// Driver code
-var arr=Array(8, 3, 2, 7, 4, 6, 8);
+const arr = Array(8, 3, 2, 7, 4, 6, 8)
-pigeonhole_sort(arr);
+pigeonhole_sort(arr)
-console.log(arr);
+console.log(arr)