基础数学计算算法

平方根求解

def getSquareRoot(num: float, precision: float, maxTry: int) -> float:
    high = num
    low = 0
    if num < 0:
        return -1
    while maxTry > 0:
        print(maxTry)
        mid = (high - low) / 2 + low
        print(mid)
        if abs(num - mid ** 2) <= precision:
            return mid
        if mid ** 2 > num:
            high = mid
        elif mid ** 2 < num:
            low =  mid
        maxTry -= 1
    return -2

a = getSquareRoot(99, 1e-32, 100)