<doocs>0747.Largest Number At Least Twice of Others_1.py
def dominantIndex( nums: List[int]) -> int:
    mx = mid = 0
    ans = -1
    for i, v in enumerate(nums):
        if v > mx:
            mid, mx = mx, v
            ans = i
        elif v > mid:
            mid = v
    return ans if mx >= 2 * mid else -1
def sample_funcname ( var_0 : List [ int ] ) -> int :
    var_5 = var_3 = 0
    var_7 = - 1
    for var_9 , var_10 in enumerate ( var_0 ) :
        if var_10 > var_5 :
            var_3 , var_5 = var_5 , var_10
            var_7 = var_9
        elif var_10 > var_3 :
            var_3 = var_10
    return var_7 if var_5 >= 2 * var_3 else - 1
