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精选leecode300+算法题 双指针80题 #139

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@tjl8787

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@tjl8787

秀哥答案里给出的解题源代码少贴了len>=2的解题部分,自己在参考时,尝试作了补充,补充后的代码如下:
int removeDuplicates(vector& nums) {
int len=0;
for(unsigned i=0;i<nums.size();i++){
if(len<2){
nums[len++]=nums[i];
}
else{
if(nums[i]!=nums[len-2]){
nums[len++]=nums[i];
}
}
}
return len;
}

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