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Complete is_fibonacci function logic #97

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Complete is_fibonacci function logic #97

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8 changes: 8 additions & 0 deletions exercises/08_pointer/main.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,14 @@ bool is_fibonacci(int *ptr, int len, int stride) {
ASSERT(len >= 3, "`len` should be at least 3");
// TODO: 编写代码判断从 ptr 开始，每 stride 个元素取 1 个元素，组成长度为 n 的数列是否满足
// arr[i + 2] = arr[i] + arr[i + 1]
for(int i = 2; i < len; i++){
int cur = *(ptr + i * stride);
int prev1 = *(ptr + (i-1) * stride);
int prev2 = *(ptr + (i-2) * stride);
if(cur != prev1 + prev2){
return false;
}
}
return true;
}

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