Mode Component (class) in Coldfusion

In statistics, the mode is the value that occurs the most frequently in a data set or a probability distribution. In some fields, notably education, sample data are often called scores, and the sample mode is known as the modal score. [1]

The code below will find the mode value in a non sorted array.

Save the below component with the name mode.cfc in a directory under wwwroot, in my case I save my components in a directory called classes:
<cfcomponent>

<cffunction name="getMode" access="public" returntype="string">

<cfargument name="amode" type="array" required="true">
<cfset oldcount=0><cfset oldtemp=0>
<cfloop from="1" to="#arrayLen(amode)-1#" index="i">

<cfset temp=amode[i]>
<cfset count=1>
<cfloop from="#i+1#" to="#arrayLen(amode)-1#" index="j">

<cfif temp is amode[j]>

<cfset count=count+1>

</cfif>
<cfif count GT oldcount>

<cfset oldtemp=temp>
<cfset oldcount=count>

</cfif>

</cfloop>

</cfloop>
<cfreturn oldtemp>

</cffunction>

</cfcomponent>



To call this component in your code you have to do the following:

1-Invoke the object:

<cfobject
name="mode"
component="classes.mode">

2- Call the getMode method and forward the array of the values:

<cfoutput> #mode.getMode(amode1)# </cfoutput>

Hope this will help.

[1] http://en.wikipedia.org/wiki/Mode_(statistics)