decode-xored-array_0224.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>decode-xored-array</title>
</head>
<body>
    
</body>
<script>
const encoded = [1,2,3];
const first = 1;

decode(encoded,first);

/**
 * @param {number[]} encoded
 * @param {number} first
 * @return {number[]}
 */
function decode(encoded, first) {
    let result = [first];
    encoded.forEach((num, index)=>{
        result.push(result[index] ^ num)
    })
    return result
};
</script>
</html>