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程式語言 - LeetCode - C++ - 69. Sqrt(x)
參考資訊:
https://www.cnblogs.com/grandyang/p/4346413.html
題目:

解答:
class Solution {
public:
int mySqrt(int x) {
for(int i = 1; i <= x; ++i){
long t = (long)i * i;
if (t == x) {
return i;
}
else if (t > x) {
return i - 1;
}
}
return 0;
}
};