[英]How can I print a result from a nested for loop only once
I am trying to create a custom bar chart, where the user can enter the number of bars, size of bars and symbol that they would like to use to create each bar.我正在尝试创建一个自定义条形图,用户可以在其中输入他们想用来创建每个条形的条数、条形大小和符号。
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
System.out.println("How many bars would you like to display?");
int num_bars = scan.nextInt();
int [] bars = new int[num_bars];
String [] symbol = new String[num_bars];
System.out.println("Specify the sizes of the bars: ");
for(int i = 0; i < bars.length; i++) {
bars[i] = scan.nextInt();
}
System.out.println("Specify the symbols to be used for the bars:");
for(int i = 0; i < symbol.length; i++) {
symbol[i] = scan.next();
}
int number = 1;
for(int bar : bars) {
System.out.print("\n" + number);
for (String sym : symbol) {
for (int size = 0; size < bar; size ++ ) {
System.out.print(sym +" ");
}
System.out.println(" ");
number++;
}
}
}
}
The result I am getting is displaying like this:我得到的结果是这样显示的:
How many bars would you like to display?
2
Specify the sizes of the bars:
8
4
Specify the symbols to be used for the bars:
%
#
1% % % % % % % %
# # # # # # # #
3% % % %
# # # #
but I am aiming for:但我的目标是:
1 % % % % % % % %
2 # # # #
Can someone please help me?有人可以帮帮我吗?
There is no need to loop over the symbol[] array.无需遍历 symbol[] 数组。 it is redundant as you can print the symbol of each bar using its index.这是多余的,因为您可以使用其索引打印每个柱的符号。
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
System.out.println("How many bars would you like to display?");
int num_bars = scan.nextInt();
int[] bars = new int[num_bars];
String[] symbol = new String[num_bars];
System.out.println("Specify the sizes of the bars: ");
for (int i = 0; i < bars.length; i++) {
bars[i] = scan.nextInt();
}
System.out.println("Specify the symbols to be used for the bars:");
for (int i = 0; i < symbol.length; i++) {
symbol[i] = scan.next();
}
int number = 1;
for (int bar : bars) {
System.out.print("\n" + number + " ");
for (int size = 0; size < bar; size++) {
System.out.print(symbol[number - 1] + " ");
}
System.out.println(" ");
number++;
}
}
you need to change your code to the following, because you are doing number++ before next number and no need to iterate symbol array again, simple use number integer value.您需要将代码更改为以下内容,因为您在下一个数字之前执行 number++ 并且无需再次迭代符号数组,只需使用数字 integer 值。 Please find below:如下请见:
for (int bar : bars) {
System.out.print("\n" + number);
//for (String sym : symbol) {
for (int size = 0; size < bar; size++) {
System.out.print(symbol[number - 1] + " ");
// }
// System.out.println(" ");
}
number++;
}
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