Contact Like Tableview Titanium :

var win = Ti.UI.createWindow();

var table = Ti.UI.createTableView({});

var contacts = ["Adam","Andrew","Boris","Claus","Debby","Jigar", "Karan", "Manoj"];

var sectionArr = [];

for (var i = 0,lastL,l,currSection,ilen = contacts.length;i<ilen;i++) {
     l = contacts[i].substr(0,1);
     if(lastL != l) {
          currSection = Ti.UI.createTableViewSection({
               headerTitle:l
          });
          sectionArr.push(currSection);
    }
    currSection.add(Ti.UI.createTableViewRow({
          title:contacts[i]
    }));
   
    lastL = l;
}
table.setData(sectionArr);

win.add(table);
win.open();

Output :