java 中的额外空格
Extra whitespaces in java
我想格式化我的代码输出,以便每个循环都有一个额外的空格。
示例:
names[4] = "bob", "mark", "james", "frank";
for (int i = 0; i < 4; i++){
System.out.println("Hello, my name is " + names[i]")
}
我希望输出为:
Hello, my name is bob
Hello, my name is mark
Hello, my name is james
Hello, my name is frank
这只是我整个代码的一小部分示例,但我必须使用大量名称来执行此操作,所以我不能只是逐行放置空格。有没有办法根据每个循环关联多少个空格?
简单,先把它做成打印语句(不是println,它在末尾换行),然后在末尾连接一个包含1 space的字符串,像这样:
System.out.print("Hello, my name is " + names[i] + " ");
EDIT 所以你想做的是按原样打印你的语句,然后在你当前的 for 循环中再次循环并打印 spaces 次数作为当前循环编号,例如:
names[4] = "bob", "mark", "james", "frank";
for (int i = 0; i < 4; i++)
{
for(int k = 0; k < i; k++)
{
System.out.print(" ");
}
System.out.println("Hello, my name is " + names[i]);
}
编辑 更流畅的方式。
names[4] = "bob", "mark", "james", "frank";
String space = "";
for (int i = 0; i < 4; i++)
{
System.out.println(space + "Hello, my name is " + names[i]);
space += " ";
}
希望这对您有所帮助。 :D
这里有一个更优雅的方法:
names[4] = "bob", "mark", "james", "frank";
spaces = " "; // as many as necessary.
for (int i = 0; i < 4; i++) {
System.out.println(spaces.substring(0, i) +
"Hello, my name is " + names[i]);
}
我想格式化我的代码输出,以便每个循环都有一个额外的空格。
示例:
names[4] = "bob", "mark", "james", "frank";
for (int i = 0; i < 4; i++){
System.out.println("Hello, my name is " + names[i]")
}
我希望输出为:
Hello, my name is bob
Hello, my name is mark
Hello, my name is james
Hello, my name is frank
这只是我整个代码的一小部分示例,但我必须使用大量名称来执行此操作,所以我不能只是逐行放置空格。有没有办法根据每个循环关联多少个空格?
简单,先把它做成打印语句(不是println,它在末尾换行),然后在末尾连接一个包含1 space的字符串,像这样:
System.out.print("Hello, my name is " + names[i] + " ");
EDIT 所以你想做的是按原样打印你的语句,然后在你当前的 for 循环中再次循环并打印 spaces 次数作为当前循环编号,例如:
names[4] = "bob", "mark", "james", "frank";
for (int i = 0; i < 4; i++)
{
for(int k = 0; k < i; k++)
{
System.out.print(" ");
}
System.out.println("Hello, my name is " + names[i]);
}
编辑 更流畅的方式。
names[4] = "bob", "mark", "james", "frank";
String space = "";
for (int i = 0; i < 4; i++)
{
System.out.println(space + "Hello, my name is " + names[i]);
space += " ";
}
希望这对您有所帮助。 :D
这里有一个更优雅的方法:
names[4] = "bob", "mark", "james", "frank";
spaces = " "; // as many as necessary.
for (int i = 0; i < 4; i++) {
System.out.println(spaces.substring(0, i) +
"Hello, my name is " + names[i]);
}