Hi all, i have used the Vf page and controller to split the values of a single filed into multiple columns.

The issue is each name is getting diplayed 3 times on the page. But if i use Set insted a List i'm able to eliminate the duplicates.

Please see the below code and let me know where exactly the issue is(i guess the issue is inside the for loop but could not sort it out
Note: i'm using custom settings object and retrieving the values to display them on page with a name and checkbox

VF page: 
	<apex:pageBlockTable value="{!MyWrappers}" var="wrap" id="pgtbl">
   <apex:column width="100px">
 <apex:inputCheckBox value="{!wrap.checkbox1}"/>
 <apex:outputField value="{!wrap.mySec1.name}"/>
    </apex:column>
 <apex:column width="100px">
   <apex:inputCheckBox value="{!wrap.checkbox2}"/>
    <apex:outputField value="{!wrap.mySec2.name}"/>
 </apex:column>
 <apex:column width="100px">
   <apex:inputCheckBox value="{!wrap.checkbox3}"/>
   <apex:outputField value="{!wrap.mySec3.name}"/> 
 </apex:column>
</apex:pageBlockTable>

Controller code:
public with class Controller {
Public  List<MyWrapper> myWrappers{get; set;}

public class MyWrapper
 {
    public Boolean checkbox1{get;set;}
    public Boolean checkbox2{get;set;}
    public Boolean checkbox3 {get;set;}
    public Custom_settings_Object__c myLead1{get;set;} 
    public Custom_settings_Object__c myLead2{get;set;}
    public Custom_settings_Object__c myLead3{get;set;}
    
 }     
    public pagereference initiallds()----calling this action from page component
    {     
  myWrappers=new List<MyWrapper>();
  Integer idx=0;
  MyWrapper wrap;      
    for(Custom_settings_Object__c ld: Custom_settings_Object__c.getall().values())   
    {               
      if (Math.mod(idx, 3)==0)
       {   
          wrap =  new MyWrapper();
           wrap.myLead1=ld; 
           
       }
      if (Math.mod(idx, 3)==1)
       {
          wrap.myLead2=ld;
      
       }
   if (Math.mod(idx, 3)==2)
       {           
       wrap.myLead3=ld;
           
       }           
          ++idx;        
          myWrappers.add(wrap);
                }    
return null;
    }
	}