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test52.java
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44 lines (40 loc) · 1.08 KB
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package byteDance;
import java.util.HashMap;
/**
* @Author:lizeyang
* @Date:2020/5/23 15:57
* function:柠檬水找零（leetcode 860）
*/
public class test52 {
public static boolean lemonadeChange(int[] bills) {
int bill5 = 0, bill10 = 0, bill20 = 0;
for (int bill : bills) {
if (bill == 5) {
bill5++;
} else if (bill == 10) {
if (bill5 >= 1) {
bill5--;
} else {
return false;
}
bill10++;
} else if (bill == 20) {
if (bill10 >= 1 && bill5 >= 1) {
bill10--;
bill5--;
} else if (bill5 >= 3) {
bill5 -= 3;
} else {
return false;
}
bill20++;
}
}
return true;
}
public static void main(String[] args) {
// int[] bills = {5, 5, 5, 10, 20};
int[] bills = {5};
System.out.println(lemonadeChange(bills));
}
}