All files / leetCode 0137.ts

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export default function singleNumber(nums: number[]): number {
  let res = 0
 
  for (let i = 0; i < 32; ++i) {
    let total = 0
 
    for (const num of nums)
      total += (num >> i) & 1
 
    if (total % 3 !== 0)
      res |= 1 << i
  }
 
  return res
}