






from __future__ import annotations

lowercase  							=					1.6_021e-19  # units = C





def 						__UpperCAmelCase			(     a_							,     a_							,     a_							,     ):
							if (conductivity, electron_conc, mobility).count(0) != 1:
														raise ValueError('You cannot supply more or less than 2 values')
							elif conductivity < 0:
														raise ValueError('Conductivity cannot be negative')
							elif electron_conc < 0:
														raise ValueError('Electron concentration cannot be negative')
							elif mobility < 0:
														raise ValueError('mobility cannot be negative')
							elif conductivity == 0:
														return (
														    "conductivity",
														    mobility * electron_conc * ELECTRON_CHARGE,
														)
							elif electron_conc == 0:
														return (
														    "electron_conc",
														    conductivity / (mobility * ELECTRON_CHARGE),
														)
							else:
														return (
														    "mobility",
														    conductivity / (electron_conc * ELECTRON_CHARGE),
														)


if __name__ == "__main__":
	import doctest

	doctest.testmod()













from __future__ import annotations





def 						__UpperCAmelCase			(     a_							,     a_							,     a_							,     a_):  # noqa: E741
							while r - l > 1:
														snake_case_				=							(l + r) // 2
														if v[m] >= key:
																					snake_case_				=							m
														else:
																					snake_case_				=							m  # noqa: E741
							return r





def 						__UpperCAmelCase			(     a_):
							if len(a_) == 0:
														return 0

							snake_case_				=							[0] * len(a_)
							snake_case_				=							1

							snake_case_				=							v[0]

							for i in range(1							,     len(a_)):
														if v[i] < tail[0]:
																					snake_case_				=							v[i]
														elif v[i] > tail[length - 1]:
																					snake_case_				=							v[i]
																					length += 1
														else:
																					snake_case_				=							v[i]

							return length


if __name__ == "__main__":
	import doctest

	doctest.testmod()





