我想在選項 3 中打印選項 1 和 2 的輸入。我有一個菜單設置，用戶選擇他們想要的數字，然后在他們選擇哪個團隊之后有后續問題。 if (choys == 1) { ch = new Scanner(System.in); System.out.println("Enter name: "); userBName = ch.nextLine(); System.out.println("Enter age: "); userBAge = ch.nextInt(); if(userBAge >=18 && userBAge <=21) { System.out.println("Congrats "+userBName+"! Welcome to the team."); bslot++; } else { System.out.println("Sorry "+userBName+". You are not qualified."); } } if (choys == 2) { System.out.println("Enter name: "); userVName = ch.nextLine(); System.out.println("Enter age: "); userVAge = ch.nextInt(); if(userVAge >=18 && userVAge <=21) { System.out.println("Congrats "+userVName+"! Welcome to the team."); vslot++; } else { System.out.println("Sorry "+userVName+". You are not qualified."); } } if (choys == 3) { System.out.println("Current number of recruits:\n"); System.out.println("Basketball team: "+ userBName+"\n\n"); System.out.println("Volleyball team: "+ userVName); } }
2 回答
慕尼黑5688855
TA貢獻1848條經驗 獲得超2個贊
我們可以使用 2 個不同的 ArrayList 來存儲選項 1 和 2 中的用戶名。然后在選項 3 中打印相同的 ArrayList。
List<String> vNames = new ArrayList();
List<String> bNames = new ArrayList();
if (choys == 1)
{
ch = new Scanner(System.in);
System.out.println("Enter name: ");
userBName = ch.nextLine();
System.out.println("Enter age: ");
userBAge = ch.nextInt();
if(userBAge >=18 && userBAge <=21)
{
System.out.println("Congrats "+userBName+"! Welcome to the team.");
bslot++;
bNames.add(userBName);
}
}
if (choys == 2)
{
ch = new Scanner(System.in);
System.out.println("Enter name: ");
userVName = ch.nextLine();
System.out.println("Enter age: ");
userVAge = ch.nextInt();
if(userVAge >=18 && userVAge <=21)
{
System.out.println("Congrats "+userVName+"! Welcome to the team.");
vSlot++;
vNames.add(userVName);
}
}
if (choys == 3)
{
System.out.println("Current number of recruits:\n");
System.out.println("Basketball team: ");
for(String name:bNames){
System.out.println("Username : "+ name);
}
}
猛跑小豬
TA貢獻1858條經驗 獲得超8個贊
我曾嘗試通過使用 while 循環讓 vNames 和 bNames 留在 ArrayList 中來擴展@Shashank 的代碼。
Scanner ch = new Scanner(System.in);
List<String> vNames = new ArrayList<String>();
List<String> bNames = new ArrayList<String>();
int choys;
int bslot = 0, vslot = 0;
Boolean run = true;
while (run) {
System.out.println("Enter Choice");
choys = Integer.parseInt(ch.next());
if (choys == 1) {
System.out.println("Enter name: ");
String userBName = ch.next();
System.out.println("Enter age: ");
int userBAge = Integer.parseInt(ch.next());
if (userBAge >= 18 && userBAge <= 21) {
System.out.println("Congrats " + userBName
+ "! Welcome to the team.");
bslot++;
bNames.add(userBName);
}
}else if (choys == 2) {
ch = new Scanner(System.in);
System.out.println("Enter name: ");
String userVName = ch.next();
System.out.println("Enter age: ");
int userVAge = Integer.parseInt(ch.next());
if (userVAge >= 18 && userVAge <= 21) {
System.out.println("Congrats " + userVName
+ "! Welcome to the team.");
vslot++;
vNames.add(userVName);
}
} else if (choys == 3) {
System.out.println("Current number of recruits:\n");
System.out.println("Basketball team: ");
for (String name : bNames) {
System.out.println("Username : " + name);
}
System.out.println("Volleyball team: ");
for (String name : vNames) {
System.out.println("Username : " + name);
}
} else {
run = false;
}
}
System.out.println("Program Ended");
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