⚡ Code it · 40 XP

Loops, conditionals and switch

Loops, conditionals and switch

if / else

if (xp >= 1000) {
    rank = 'Legend';
} else if (xp >= 100) {
    rank = 'Hero';
} else {
    rank = 'Novice';
}

Comparisons: ==, !=, <, >=… Logic: &&, ||, !. String == is case-insensitive in Apex ('a' == 'A' is true). Use .equals() when case matters.

Loops

for (Integer i = 0; i < 10; i++) { ... }       // classic
for (Account a : accounts) { ... }              // for-each: you'll use this most
while (queue.size() > 0) { ... }
do { ... } while (condition);

break and continue work as you'd expect.

There's also a special SOQL for loop that processes query results in chunks of 200, which saves heap on big queries:

for (Account a : [SELECT Id FROM Account]) { ... }

switch

switch on status {
    when 'New' { ... }
    when 'In Progress', 'Blocked' { ... }   // multiple values
    when null { ... }
    when else { ... }
}

switch on works with Integer, Long, String, sObject types and enums. It can't match ranges, so use if/else for "greater than" logic.

Your mission

scores and day already exist. Count, find the max, grade it, and name the day.