Create Solution.js

unit_01/w03d02/morning_exercise/Solution.js

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+// least efficient
+var diff = function(arr){
+  var biggest = 0
+  for (var i = 0; i < arr.length; i++) {
+    for (var j = 0; j < arr.length; j++) {
+      if ( biggest < (arr[i] - arr[j])){
+        biggest = arr[i] - arr[j];
+      }
+    };
+  };
+  return biggest
+}
+
+console.log(diff([1,4, 6, 2, 9]))
+
+
+// more efficient
+var diff = function(arr){
+  arr.sort(function(a, b){
+    return a - b
+  })
+  return arr[arr.length - 1] - arr[0];
+}
+console.log(diff([9,8,1,2,3,4,5]));
+
+
+// most efficient
+var diff = function(arr){
+  var small = arr[0];
+  var big = arr[0];
+  for (var i = 0, len = arr.length, j = 0; i < len; i++) {
+    if(arr[i] > big ){
+      big = arr[i];
+    } else if (arr[i] < small){
+      small = arr[i];
+    }
+  };
+  return big - small;
+}
+
+console.log(diff([9,8,1,2,3,4,5]));