utils/list_change_sign.py
def sign_change(var):
    """
    Given a list of signed numbers, this function indicates whether the sign of numbers change
    :type var: list
    :param var: a list of numbers
    :return:
    """
    n_changes = 0
    for x in range(0, len(var) - 1):
        if var[x] == 0:
            print("Item " + str(x) + " is zero")
            current = 1
            second = 1
        elif var[x + 1] == 0:
            print("Item " + str(x + 1) + "is zero")
            print("Testing a sign change between item " + str(x) + " and item " + str(x + 2))
            if abs(var[x]) == var[x]:
                current = 1
            else:
                current = -1
            if abs(var[x + 2]) == var[x + 2]:
                second = 1
            else:
                second = -1
        else:
            if abs(var[x]) == var[x]:
                current = 1
            else:
                current = -1
            if abs(var[x + 1]) == var[x + 1]:
                second = 1
            else:
                second = -1
        if current * second < 0:
            print("Sign change: item " + str(x + 1) + " and item " + str(x + 2))
            n_changes = n_changes + 1
    print(str(n_changes) + " sign changes detected")

    Given a list of signed numbers, this function indicates whether the sign of numbers change
    :type var: list
    :param var: a list of numbers
    :return:
    
Given a list of signed numbers, this function indicates whether the sign of numbers change
Given a list of signed numbers this function indicates whether the sign of numbers change
def sign_change(var):
    n_changes = 0
    for x in range(0, len(var) - 1):
        if var[x] == 0:
            print("Item " + str(x) + " is zero")
            current = 1
            second = 1
        elif var[x + 1] == 0:
            print("Item " + str(x + 1) + "is zero")
            print("Testing a sign change between item " + str(x) + " and item " + str(x + 2))
            if abs(var[x]) == var[x]:
                current = 1
            else:
                current = -1
            if abs(var[x + 2]) == var[x + 2]:
                second = 1
            else:
                second = -1
        else:
            if abs(var[x]) == var[x]:
                current = 1
            else:
                current = -1
            if abs(var[x + 1]) == var[x + 1]:
                second = 1
            else:
                second = -1
        if current * second < 0:
            print("Sign change: item " + str(x + 1) + " and item " + str(x + 2))
            n_changes = n_changes + 1
    print(str(n_changes) + " sign changes detected")
def sign_change ( var ) : n_changes = 0 for x in range ( 0 , len ( var ) - 1 ) : if var [ x ] == 0 : print ( "Item " + str ( x ) + " is zero" ) current = 1 second = 1 elif var [ x + 1 ] == 0 : print ( "Item " + str ( x + 1 ) + "is zero" ) print ( "Testing a sign change between item " + str ( x ) + " and item " + str ( x + 2 ) ) if abs ( var [ x ] ) == var [ x ] : current = 1 else : current = - 1 if abs ( var [ x + 2 ] ) == var [ x + 2 ] : second = 1 else : second = - 1 else : if abs ( var [ x ] ) == var [ x ] : current = 1 else : current = - 1 if abs ( var [ x + 1 ] ) == var [ x + 1 ] : second = 1 else : second = - 1 if current * second < 0 : print ( "Sign change: item " + str ( x + 1 ) + " and item " + str ( x + 2 ) ) n_changes = n_changes + 1 print ( str ( n_changes ) + " sign changes detected" )
Given a list of signed numbers, this function indicates whether the sign of numbers change
Given a list of signed numbers this function indicates whether the sign of numbers change
"""
    Given a list of signed numbers, this function indicates whether the sign of numbers change
    :type var: list
    :param var: a list of numbers
    :return:
    """
None
var
a list of numbers
a list of numbers