function findAllOccurrences(arr, target) {
var a = [];
for(var i in arr){
if(arr[i]==target){
a.push(i);
}
}
return a ;
}
function findAllOccurrences(arr, target) {
var a = [];
for(var i in arr){
if(arr[i]==target){
a.push(i);
}
}
return a ;
}