Hi,
<table border="1" cellspacing="0" cellpadding="0" style="font-family:Arial,Arial; font-size:10pt; background-color:#ffffff; padding-left:2pt; padding-right:2pt; "> <colgroup><col style="font-weight:bold; width:30px; " /><col style="width:64px;" /><col style="width:85px;" /></colgroup><tr style="background-color:#cacaca; text-align:center; font-weight:bold; font-size:8pt; "><td > </td><td >A</td><td >B</td></tr><tr style="height:17px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >1</td><td >A</td><td >Z</td></tr><tr style="height:17px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >2</td><td >B</td><td > </td></tr><tr style="height:17px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >3</td><td >Z</td><td > </td></tr><tr style="height:17px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >4</td><td >P</td><td > </td></tr></table>
<table style="font-family:Arial; font-size:10pt; border-style: groove ;border-color:#00ff00;background-color:#fffcf9; color:#000000; "><tr><td >Spreadsheet Formulas</td></tr><tr><td ><table border = "1" cellspacing="0" cellpadding="2" style="font-family:Arial; font-size:9pt;"><tr style="background-color:#cacaca; font-size:10pt;"><td >Cell</td><td >Formula</td></tr><tr><td >B1</td><td >{=CHAR(MAX<span style=' color:008000; '>(CODE<span style=' color:#0000ff; '>(A1:A4)</span>)</span>)}</td></tr></table></td></tr><tr><td ><span style=' font-family:Arial,Arial; font-size:9pt; font-weight:bold;'>Formula Array:</span><span style=' font-family:Arial,Arial; font-size:9pt;'>
Enclosing </span><span style=' font-family:Arial,Arial; font-size:9pt; font-weight:bold;'>{ }</span><span style=' font-family:Arial,Arial; font-size:9pt;'> not to key
Enter formula with CTRL+SHIFT+RETURN !</span></td></tr></table>