There are n bulbs numbered from 1 to n, arranged in a row. the first bulb is plugged into the power socket and each successive bulb is connected to the previous one. (second bulb to first, third to second) initially, all the bulbs are turned off. a moment k (for k from 0 to n-1), the a[k]-th bulb is turned on. a bulbs shines if it is one and all the previous bulbs are turned on too. write a function in java that given an array a of n different integers from 1 to n, returns the number of moments for which every turned on bulb shines.

Atool that matches persoal skills qualities interests and talets to a career is called a

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Write a program that displays the following menu: geometry calculator 1. calculate the area of a circle 2. calculate the area of a rectangle 3. calculate the area of a triangle 4. quit enter your choice (1-4): if the user enters 1, the program should ask for the radius of the circle and then display its area. use the following formula: area = ď€(the square of r) use 3.14159 for ď€ and the radius of the circle for r. if the user enters 2, the program should ask for the length and width of the rectangle and then display the rectangle’s area. use the following formula: area = length * width if the user enters 3, the program should ask for the length of the triangle’s base and its height, and then display its area. use the following formula: area = base * height * .5 if the user enters 4, the program should end. input validation: display an error message if the user enters a number outside the range of 1 through 4 when selecting an item from the menu. do not accept negative values for the circle’s radius, the rectangle’s length or width, or the triangle’s base or height. note: if the user enters an improper menu choice (1-4), the program prints "the valid choices are 1 through 4. run the program again and select one of those." if the user enters a negative radius, the program prints "the radius can not be less than zero." if the user enters a negative value for height or base, the program prints "only enter positive values for base and height."