快速查找两个字符串的最大公共子串（任意开发语言实现都行）

function getMaxIntersec(stra, strb) {
var aLen = stra.length;
var bLen = strb.length;
var index = 0;
var beginIndex = 0;
var endIndex = 0;
for (index = 0; index < aLen; index++) { var i = 0; var begin = index; var end = index; var aChar = stra.charAt(index); while (i (endIndex – beginIndex)) {
beginIndex = begin;
endIndex = end;
}
}
return stra.substring(beginIndex, endIndex);
}
alert(getMaxIntersec(“abcecade”, “dgecadde”));