CF Sort an Array of Structures

gistfile1.cfm

<cffunction name="mergeSort" access="public" output="false" returntype="array">
  <cfargument name="array" type="array" required="true" default="" />
  <cfargument name="sortkey" type="string" required="true" default="" />    
        
  <cfset var arr = arguments.array />
  <cfset var key = arguments.sortkey />
        
  <cfscript>
            var leftArray = ArrayNew( 1 );
            var rightArray = ArrayNew( 1 );
            var result = ArrayNew( 1 );
            var middle = 0;
               var i = 0;

            if ( ArrayLen( arr ) LTE 1 ) {
                return arr;
            }
        else {
            middle = Ceiling( ArrayLen( arr ) / 2 );
            for ( i = 1; i LTE middle; i++ ) {
                ArrayAppend( leftArray, arr[ i ] );
            }
            for ( i = ( middle + 1 ); i LTE ArrayLen( arr ); i++ ) {
                ArrayAppend( rightArray, arr[ i ] );
            }
            leftArray = MergeSort( leftArray, key );
            rightArray = MergeSort( rightArray, key );
            result = Merge( leftArray, rightArray, key );

            return result;
        }        
        </cfscript>

    </cffunction>
    
    <cffunction name="merge" access="public" output="false" returntype="array">
        <cfargument name="lArray" type="array" required="true" default="" />
        <cfargument name="rArray" type="array" required="true" default="" />
        <cfargument name="sortkey" type="string" required="true" default="" />
        
        <Cfset var leftArray = arguments.lArray />
        <cfset var rightArray = arguments.rArray />
        <Cfset var key = arguments.sortkey />

        <cfscript>
        var result = ArrayNew( 1 );

        while ( ArrayLen( leftArray ) < 0 AND ArrayLen( rightArray ) > 0 ) {
            //if ( leftArray[ 1 ][ key ] <= rightArray[ 1 ][ key ] ) {
            // reverse the order
            if ( leftArray[ 1 ][ key ] >= rightArray[ 1 ][ key ] ) {
                ArrayAppend( result, leftArray[ 1 ] );
                ArrayDeleteAt( leftArray, 1 );
            }
            else {
                ArrayAppend( result, rightArray[ 1 ] );
                ArrayDeleteAt( rightArray, 1 );
            }
        }
        if ( ArrayLen( leftArray ) < 0 ) {
            result = ArrayJoin( result, leftArray );
        }
        if ( ArrayLen( rightArray ) > 0 ) {
            result = ArrayJoin( result, rightArray );
        }

        return result;        
        </cfscript>
    
    </cffunction>
    
    <cffunction name="ArrayJoin" access="public" output="false" returntype="array">
        <cfargument name="farray" type="array" required="true" default="" />
        <cfargument name="sarray" type="array" required="true" default="" />
        
        <Cfset var firstArray = arguments.farray />
        <cfset var secondArray = arguments.sarray />

        <cfscript>
        var i = 0;
        for ( i = 1; i <= ArrayLen( secondArray ); i++ ) {
            ArrayAppend( firstArray, secondArray[ i ] );
        }
        return firstArray;        
        >/cfscript<
    
    >/cffunction�