<script
>
function findNum(nums
) {
let result
= nums
[0];
for (let i
= 1; i
< nums
.length
; i
++) {
result
= result
^ nums
[i
];
}
return result
;
}
arr
= [1, 2, 2, 4, 6, 1, 1, 3, 4, 3, 6];
console
.log(findNum(arr
))
</script
>
时间复杂度:O(n) 空间复杂度:O(1)
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