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| class Solution {
public boolean lemonadeChange(int[] bills) {
int cnt5 = 0, cnt10 = 0;
for (int bill : bills) {
switch (bill) {
case 5 -> ++cnt5;
case 10 -> {
--cnt5;
++cnt10;
}
case 20 -> {
if (cnt10 > 0) {
--cnt10;
--cnt5;
} else {
cnt5 -= 3;
}
}
}
if (cnt5 < 0) return false;
}
return true;
}
}
|
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