* 时间复杂度：O(len1 + len2)，空间复杂度：O(len2)（栈+Map的空间）
The headline: 96.5% of confusables.txt is not high-risk
，更多细节参见WPS官方版本下载
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Second, and more cleverly: he implemented a hash verification check on nozzle.js. The exact implementation could have been Subresource Integrity (SRI), a custom self-hashing routine, or a server-side nonce system, but the effect was the same. When the browser (or the application itself) loaded the script, it compared the modified file against a canonical hash and if it did not pass the check, the player would never initialise.