[英]Add x number of spaces between the letters of a string in Java?
我需要接收一個整數並讓它打印出名稱字母之間的空格數。 現在我把它打印出來一個空格。
public static void printLongName(int spaces){
String name
char[] letter = name.toCharArray();
for(int i = 0; i < letter.length; i++)
System.out.print(" " + letter[i]);
System.out.println();
}
使用System.out.format()
System.out.format("%10c", letter[i]);
更新
int spaces=10;
String name ="aaaaaaaa";
char[] letter = name.toCharArray();
for(int i = 0; i < letter.length; i++)
System.out.format("%10c", letter[i]);
public static void printLongName(String name, int numOfSpacesBetweenLetters) {
StringBuffer sbSpace = new StringBuffer();
for (int i = 0; i <= numOfSpacesBetweenLetters; i++) {
sbSpace.append(" ");
}
char[] letter = name.toCharArray();
for (int i = 0; i < letter.length; i++) {
System.out.println(sbSpace + letter[i]);
}
}
//System.out.print(" " + letter[i]);
//System.out.print(getSpace(10) + letter[i]);like this you can
public String getSpace(int count)
{
String space="";
for(int i=0;i<count;i++)
space+=" ";
return space;
}
我相信你正在尋找這樣的東西:
System.out.format("[%13s]%n", ""); // prints "[ ]" (13 spaces)
System.out.format("[%1$3s]%n", ""); // prints "[ ]" (3 spaces)
此正則表達式將允許您適當地添加空格。
您需要首先使用參數輸入構建空格字符串。 請看下面的代碼:
public static void printLongName(int spaces){
String name = "hello";
StringBuilder sb = new StringBuilder();
String spaceStr = "%"+spaces+"c";
char[] letter = name.toCharArray();
for(int i = 0; i < letter.length; i++) {
if (i == 0) {
sb.append(letter[i]);
} else {
sb.append(String.format(spaceStr, letter[i]));
}
}
System.out.println(sb);
}
public static void main(String[] args) {
printLongName(4);
}
更新一些代碼。
此函數將返回一個帶空格的字符串:
String nameWithSpaces(String name, int spaces) {
StringBuilder sbname = new StringBuilder(name);
String spaces = String.valueOf(new char[spaces]).replace("\0", " ");
for (int i=1; i < sbname.length(); i += spaces.length()+1)
sbname.insert(i, spaces);
return sbname.toString();
}
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