C语言三种方法解决轮转数组问题_C 语言

void reverse(int*nums,int left,int right)
{
    while(left<right)
    {
        int tmp = nums[left];
        nums[left]=nums[right];
        nums[right] = tmp;
        ++left;
        --right;
    }
}
void rotate(int* nums, int numsSize, int k){
    k%=numsSize;
    reverse(nums,0,numsSize-k-1);
    reverse(nums,numsSize-k,numsSize-1);
    reverse(nums,0,numsSize-1);
}

void rotate(int* nums, int numsSize, int k){
    k %=numsSize;
  while(k--){
      int tmp = nums[numsSize-1];
      for(int end = numsSize-2;end>=0;--end){
          nums[end+1] = nums[end];
      }
      nums[0] = tmp;
  }
}

void rotate(int* nums, int numsSize, int k){
   k %= numsSize;
   int *newnum = (int*)malloc(sizeof(int)*numsSize);
   int j = 0;
   for(int i =numsSize-k;i<numsSize;i++){
       newnum[j++] =nums[i];
   }
   for(int i = 0;i<numsSize-k;i++){
       newnum[i+k] = nums[i];
   }
   memcpy(nums,newnum,sizeof(int)*numsSize);
}