Control Flow

Learning Objectives

• break Statements
• while Loops

break Statements

break Statements

The break statement is used to stop a loop if the condition is met. This is used along with an if statement.

for (i in vector){
  perform task
  if (condition){
    break
  } else {
    perform task
  }
}

Example

Simulate from a \(N(1,1)\) distribution until you have 30 positive numbers or you simulate one negative number.

while Loops

while Loops

A while loop is a combination of a for loop and a break statement. The loop will continue indefinitely until a condition becomes false.

while (condition){
  perform task
  condition <- update condition
}

Example

Simulate from a \(N(0,1)\) distribution until you have 50 positive numbers.\

Example

Find the value of \(x\) where the function \(y=1/x\) relative converges (\(\frac{|y_{old}-y_{new}|}{y_{old}}\)) at a level of \(10^-6\) as \(x\rightarrow \infty\).

for Loops

Example

Generate the first 1000 prime numbers.

Example

Write a loop that will generate the first 1000 numbers of the Fibonacci sequence.

Example

Generate the 10th row of Pascal’s Triangle.