6.11: Practice Exercises

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Page ID: 136661

Zara Noroozi
Irvine Valley College

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Exercise 1: First Zero with a for Loop

Write the function firstZeroIndex.m that receives a one-dimensional array of numbers and returns the index of the first zero it finds in the array. Use a for loop.

Exercise 2: First Zero with a while Loop

Write the function firstZeroIndex2.m that receives a one-dimensional array of numbers and returns the index of the first zero it finds in the array. Use a while loop.

Exercise 3: First Zero with Logical Indexing

Write the function firstZeroIndex3.m that receives a one-dimensional array of numbers and returns the index of the first zero it finds using logical indexing.

Exercise 4: Make a Vector

Write a script called makeVector.m that asks the user to enter elements of a vector one at a time. Once the user is done, print the elements of the vector in sentence format.

Exercise 5: Get an Integer

Write a script called getInteger.m that prompts the user for an integer. If the user enters a non-integer value, repeat the prompt until an integer is entered.

Exercise 6: Tuition Calculator

Write a script called tuition.m and a local function called fourYearTuition. The script should ask the user for a starting year between 2024 and 2045. The function should calculate the cost of a four-year education using the given percentage increases.

Exercise 7: Verify Euler’s Series

Write the script verifyEuler.m to numerically verify that the sum of 1/i^2 approaches pi^2/6. Use a while loop and stop when the approximation is within a chosen tolerance.

Exercise 8: Count Negative Values

Write a function countNegatives.m that receives a vector and returns how many elements are negative. Use a for loop.

Exercise 9: Matrix Row Sums

Write a function rowSums.m that receives a matrix and returns a column vector containing the sum of each row. Use nested loops.

Exercise 10: Multiplication Table

Write a script that uses nested for loops to print a multiplication table from 1 through 10.

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