英文:
I want to split string by number and symbol "." in java
问题
"我需要按numbers和.符号拆分字符串。我的字符串是
"Nagapur82. Nanavade83. Nandur84. Nandurkichi Wadi85."
我想要一个类似的数组
[ "Nagapur", "Nanavade", "Nandur", "Nandurkichi Wadi"]
```"
<details>
<summary>英文:</summary>
I need to split the String by `numbers` and `.` symbol.
My String is
"Nagapur82. Nanavade83. Nandur84. Nandurkichi Wadi85."
and I want Array of like
[ "Nagapur", "Nanavade", "Nandur", "Nandurkichi Wadi"]
</details>
# 答案1
**得分**: 0
```java
// 让我们首先手动实现一些东西，只是为了好玩。
// 首先，你要计算子字符串的数量：
int count = 0; // 元素的数量
boolean wasSeparator = true;
for (int index = 0; index < s.length(); index++) {
boolean isSeparator = (((Character.isDigit(s.charAt(index))) || (s.charAt(index) == '.')));
if (wasSeparator && (!isSeparator)) {
count++;
}
wasSeparator = isSeparator;
}
// `count` 代表了数组的长度。现在将子字符串计算到一个字符串数组中：
String[] elements = new String[count];
int itemIndex = 0;
int start = -1;
int end = -1;
for (int index = 0; index < s.length(); index++) {
boolean isSeparator = (((Character.isDigit(s.charAt(index))) || (s.charAt(index) == '.')));
if (isSeparator) {
if (start >= 0) {
end = index;
elements[itemIndex++] = s.substring(start, end);
start = -1;
end = -1;
}
} else {
if (start == -1) start = index;
}
}
if (start >= 0) elements[itemIndex++] = s.substring(start);
// 当然，你可以使用 `split` 方法：
String[] result = s.split(yourregex);
// 你的正则表达式是数字或点。你的正则表达式将包含 \d 和 \。
// 在这里，你的正则表达式是 `(\d|\.)+`，所以尝试：
String[] result = s.split("(\\d|\\.)+");
英文:
Let's implement something manually first, just for fun.
First, you count the number of substrings:
int count = 0; //Number of elements
boolean wasSeparator = true;
for (int index = 0; index < s.length(); index++) {
boolean isSeparator = (((Character.isDigit(s.charAt(index))) || (s.charAt(index) == '.')));
if (wasSeparator && (!isSeparator) {
count++;
}
wasSeparator = isSeparator;
}
count represents the length of your array. Now compute the substrings into an array of strings:
String[] elements = [];
int itemIndex = 0;
int start = -1;
int end = -1;
for (int index = 0; index < s.length; index++) {
boolean isSeparator = (((Character.isDigit(s.charAt(index))) || (s.charAt(index) == '.')));
if (isSeparator) {
if (start >= 0) {
end = index;
elements[itemIndex++] = s.substring(start, end);
start = -1;
end = -1;
}
} else {
if (start == -1) start = index;
}
}
if (start >= 0) elements[itemIndex++] = s.substring(start);
Of course, you can use split:
String[] result = s.split(yourregex);
and your regex is that it's digit or dot. Your regular expression will contain \d and .
Your regex here is (\d|\.)+, so try
String[] result = s.split((\d|\.)+);
答案2
得分: 0
String s = "Nagapur82. Nanavade83. Nandur84. Nandurkichi Wadi85.";
s = s.replace(" ", "");
s = s.replace(".", "");
String[] s2 = s.split("[0-9]+");
This may work
英文:
String s = "Nagapur82. Nanavade83. Nandur84. Nandurkichi Wadi85.";
s = s.replace(" ", "");
s = s.replace(".", "");
String[] s2 = s.split("[0-9]+");
This may work
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