Update 3. 数组中重复的数字.md #1418
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Update 3. 数组中重复的数字.md #1418
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这里第二次调用是多余的！ duplicate 中每一次for循环的目的都是为了让 nums[i] == i ，也就是第 i 个位置等于 i 。 所以 while 循环要么找到重复数字return，要么结束循环后使得 nums[i] == i ，这时候再调用 swap(nums, i, nums[i]) 没有任何意义
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这里第二次调用是多余的！
duplicate 中每一次for循环的目的都是为了让 nums[i] == i ，也就是第 i 个位置等于 i 。 所以 while 循环要么找到重复数字return，要么结束循环后使得 nums[i] == i ，这时候再调用 swap(nums, i, nums[i]) 没有任何意义