编写一个函数，它接受两个字符串并显示出现在任一字符串中的字符（不带双精度）。
10分钟内自己学会PHP
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10分钟内自己学会PHP其中，第1篇为入门篇，主要包括了解PHP、PHP开发环境搭建、PHP开发基础、PHP流程控制语句、函数、字符串操作、正则表达式、PHP数组、PHP与Web页面交互、日期和时间等内容；第2篇为提高篇，主要包括MySQL数据库设计、PHP操作MySQL数据库、Cookie和Session、图形图像处理技术、文件和目录处理技术、面向对象、PDO数据库抽象层、程序调试与错误处理、A
解决方案
function characteroverlap(array1, array2) {
let occurrence = {};
let str = array1.concat(array2);
// find the count of each character
array.from(str).foreach((char) => {
let currentcount = occurrence[char] || 0;
occurrence[char] = currentcount + 1;
});
// return the keys which is the individual character and join.
const result = object.keys(occurrence);
return result.join("");
}
console.log(characteroverlap("computer", "circuitemtop"));
console.log(characteroverlap("frontend", "development"));
console.log(characteroverlap("mivrog", "gormiv"));
console.log(characteroverlap("praxet", "xetpar"));
console.log(characteroverlap("stone", "tones"));
console.log(characteroverlap("rescue", "secure"));
结果
> computer > frontedvlpm > mivrog > praxet > stone > rescu
