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topic:

Starting ideas:

Change of ideas:

Above code:

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topic:

Given an array of integers nums If any value appears in the arrayAt least twice ,returntrue ; If each element in the array is different, returnfalse 。

Starting ideas:

Violently solving the double for loop directly produces the result, but it times out! ! !

Timeout, what a miserable life!!!

Change of ideas:

Sorting first and then traversing successfully

Hey, that's all, hehehe

Above code:

int cmp(const void *x,const void *y)
{
 
                                   

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