PLACEMENT CS201 EXAM 45 MINUTES NAME ______________________________________ 1. Please write code / pseudocode for two new functions for the "ThreeIntMath " class: "polynomial" that assumes the three integers x, y, z, for an object are the integer coefficients of a polynomial f(a)=xa 2+ya+z and evaluate the polynomial for a "double" argument "a" passed to the method. "minimum" that will return the minimum value of the three integers x, y, z, for an object.
public class ThreeIntMath { private int x, y, z; public ThreeIntMath( ) { setInts(0, 0, 0); } public ThreeIntMath(int i1, int i2, int i3) { setInts(i1, i2, i3); } public int getInt1( ) { return x; } public int getInt2( ) { return y; } public int getInt3( ) { return z; } public void setInts(int i1, int i2, int i3) { x=i1; y=i2; z=i3; } public String toString( ) { return "Int1=" + x + " Int2=" + y + " Int3=" + z; } public double average( ) { return (x+y+z)/3.; } // Add your polynomial method here
// Add your minimum method here
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}
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2. Write code /pseudocode for a program called "time until winter break" that asks the user the number of weeks, days, and hours until winter break (assumed all integers) and will output three things: the total time in real number weeks (converts weeks and days and hours to just real number of weeks) the total time in real number days (converts weeks and days and hours to just real number of days) the total time in integer hours (converts weeks and days and hours to just real number of hours) Please check the following for user input data validation, or set to zero 0<=weeks 0<=days<=7 0<=hours<=24
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3. Write code /pseudocode that will ask the user for positive real number exams scores one at a time until the user enters 1 (which ends the input, and is not a valid exam score). You can assume the user will enter positive real number scores correctly. Have the program the count scores and keep track of which score is the maximum score. Output the number of scores read, the value of the maximum score, and which number exam score had this maximum score first.
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public double polyomial(double a) { return x*Math.pow(a,2)+y*a+z; } public int minimum() { if (x<y && x<z) return x; else if (y<x && y<z return y; else return z; } public class TimeUntilSummerBreak { private int weeks, days, hours; public TimeUntilSummerBreak ( ) { set Weeks(0); setDays(0); setHours(0); } public TimeUntilSummerBreak (int newWeeks, int newDays, int newHours) { set Weeks(newWeeks); setDays(newDays); setHours(newHours);} public int getWeeks() public int getDays() public int getHours() { return weeks; } { return days; } { return hours; }
public setWeeks(int newWeeks) { if (newWeeks>=0) weeks=newWeeks; else weeks=0; } public setDays(int newDays) { if (newDays>=0 && newDays<7) else days=0; } days=newDays;
public setHours(newHours) { if (newHours>=0 && newHours<24) else hours=0; }
hours=newHours;
public double totalWeeks() { return weeks + days/7. + hours/24./7.; } public double totalDays() { return weeks*7 + days + hours/24.; } public int totalHours() ...