my solution

scripts.js

@@ -1,32 +1,75 @@
 // FILL IN THE FUNCTIONS BELOW
 
 var sprintFunctions = {
-  largestEl: function(){  
-    // your code here
-  },
 
-  reversed: function(){  
-    // your code here
+  largestEl : function(array){ 
+   	var larger = array[0]
+  		for (var i = 0; i < array.length; i++) {
+  			if (larger < array[i]) {
+  				larger = array[i];
+  				} 
+ 		}
+    return larger;
   },
-
-  loudSnakeCase: function(){  
-    // your code here
+
+  reversed: function(word){  
+    var arrayOfWord = [];
+  		arrayOfWord=Array.from(word);
+  		var reversedArray=arrayOfWord.reverse();
+  		var reversedWord=reversedArray.join('');
+  		return reversedWord;
   },
 
-  compareArrays: function(){ 
-    // your code here (replace the return)
-    return "Finish compareArrays first!" 
+  loudSnakeCase: function(sentence){
+  		var cleanArray= sentence.toLowerCase().replace(/[^\w\s]|_/g, "").replace('  ',' ').split(" ");
+   		var capInit = function() {
+   			for (i=0; i<cleanArray.length; i++) {
+      			cleanArray[i]=cleanArray[i].charAt(0).toUpperCase() + cleanArray[i].substring(1); 
+      			}   
+        	return cleanArray.join('_');  
+  			};  
+  	return	capInit();
   },
 
-  fizzBuzz: function(){  
-    // your code here
-  },
+  compareArrays: function(array1, array2){ 
+       if (array1.length !== array2.length) return false;
+    	for (var i = 0; i < array1.length; i++){
+			if (array1[i] !== array2[i]){return false;}
+    		}
+    		return true; 
+   },
 
-  myMap: function(){  
-    // your code here
-  },
+  fizzBuzz: function(m){  
+  var emptyArray=[];
+  for (i=1; i<=m; i++) {
+    if (i%3===0 && i%5===0) {emptyArray.push('FIZZBUZZ');}
+    else if (i%3===0) {emptyArray.push('FIZZ');}
+    else if (i%5===0) {emptyArray.push('BUZZ');}
+    else {emptyArray.push(i);}
+    } //end of for
+
+  return emptyArray;
+  },//endof fizzBuzz
+
+  myMap: function(arr, func){  
+   var newArray= [];  
+  	for (i=0; i<arr.length;i++) {
+    var y = func(arr[i]);
+    newArray.push(y);
+     } //end for
+
+  return newArray;
+  },//my map end
+
+  primes: function(n){  
+  var newArray=[];
+  var counter=0;
+  	for(var j=1;j<=n;j++){
+    	for(var i=1;i<=j;i++){if(j%i===0){counter++;}}
+        	if(counter===2){newArray.push(j);}
+    			counter=0;
+    }
+return newArray;
+},
 
-  primes: function(){  
-    // your code here
-  },
 }