LESSON 176 OF 414 · PROJECTS: EVERYDAY PROGRAMS

Password Strength V6 - Scored 0-100 in Rust

Practice

Combine the earlier checks into a single numeric score between 0 and 100.

You start with:

The Rust editor starts empty, so write the whole program yourself. Begin with the data:

let mut password = "Secret!99";

Build:

Length: 9
Score: 100

Rules:

Start with score = 0.
If the length is at least 8, add 25.
If the password contains an uppercase letter, add 20.
If it contains a lowercase letter, add 20.
If it contains a digit, add 20.
If it contains a symbol (not a letter and not a digit), add 15.
Print "Length: " followed by the length, then print "Score: " followed by the score.

Try other passwords: with abc123 the output is

Length: 6
Score: 40

Use the same char methods, then accumulate into a mutable integer score.

let mut password = "Secret!99";
let mut length = password.len();
let mut hasUpper = false;
let mut hasLower = false;
let mut has_digit = false;
let mut hasSymbol = false;
for c in password.chars() {
    if c.is_uppercase() {
        hasUpper = true;
    }
    if c.is_lowercase() {
        hasLower = true;
    }
    if c.is_ascii_digit() {
        has_digit = true;
    }
    if !c.is_alphanumeric() {
        hasSymbol = true;
    }
}
let mut score = 0;
if length >= 8 {
    score += 25;
}
if hasUpper {
    score += 20;
}
if hasLower {
    score += 20;
}
if has_digit {
    score += 20;
}
if hasSymbol {
    score += 15;
}
println!("Length: {}", length);
println!("Score: {}", score);

STEP 1 OF 19

Guided

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Password Strength V6 - Scored 0-100 in Rust

Password Strength V6 in Rust