diff --git a/lib/discrepances.js b/lib/discrepances.js
index b664da8..dfb1214 100644
--- a/lib/discrepances.js
+++ b/lib/discrepances.js
@@ -38,6 +38,12 @@ function getClass(variable) {
     if(variable instanceof Object) { return 'Object'; }
     throw new Error('undetected class type');
 }
+
+function compare(result, a, b, index) {
+    var diff = discrepances(a[index], b[index]);
+    result.push(diff || null);
+}
+
 discrepances = function discrepances(a, b){
     if(a === b){
         return null;
@@ -49,8 +55,25 @@ discrepances = function discrepances(a, b){
         if(typeA==='object' || typeB==='object') {
             var classA = getClass(a);
             var classB = getClass(b);
+            //console.log("classA", classA, "classB", classB)
             if(classA !== classB) {
                 return {classes:[classA,classB], values:[a,b]};
+            } else {
+                if(classA==='Array') {
+                    var res=[];
+                    var max = Math.min(a.length, b.length);
+                    for(var i_ab=0; i_ab<max; ++i_ab){
+                        compare(res, a, b, i_ab);
+                    }
+                    var rv = {};
+                    res.forEach(function(r,index) {
+                        if(r) { rv[index] = r; }
+                    });
+                    if(a.length !== b.length) {
+                        rv.length = discrepances(a.length,b.length);
+                    }
+                    return {array:rv};
+                }
             }
         }
         if(typeA === 'number') {
diff --git a/test/test.js b/test/test.js
index 6177db8..33f82bb 100644
--- a/test/test.js
+++ b/test/test.js
@@ -14,7 +14,7 @@ describe("discrepances", function(){
         {a:null              , b:0                  , expected: {types:['null'  , 'number'], values:[null, 0]                            }},
         {a:fechaActual       , b:/a/                , expected: {classes:['Date'  , 'RegExp'], values:[fechaActual, /a/]                    }},
         {skip:true, a:new Date(2011,1,3), b:new Date(2011,1,4) , expected: {difference:'a definir', values:[new Date(2011,1,3), new Date(2011,1,4)] }},
-        {skip:true, a:[1,2,3,4,5]       , b:[1,2,33,4,5,6]     , expected: {array:{length:discrepances(5,6), 2:discrepances(3,33)}                  }},
+        {a:[1,2,3,4,5]       , b:[1,2,33,4,5,6]     , expected: {array:{length:discrepances(5,6), 2:discrepances(3,33)}                  }},
         {skip:true, a:{x:1, y:2}        , b:{y:3, z:{zz:3}}    , expected: {object:{x:{onlyLeft:1}, y:discrepances(2,3), z:{onlyRight:{zz:3}}}      }},
         {skip:true, a:{x:1, y:2, z:[3]} , b:{x:1, y:2, z:[3]}  , expected: null                                                                      },
     ].forEach(function(fixture){