[
https://issues.apache.org/jira/browse/GROOVY-11655?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
John updated GROOVY-11655:
--------------------------
Description:
for leetcode problem:
[https://leetcode.com/problems/design-a-text-editor/description/]
the java code below, suppose StringBuilder to be a contain of chars ,
meanwhile as a stack.
{code:java}
class TextEditor {
private final StringBuilder left = new StringBuilder();
private final StringBuilder right = new StringBuilder();
public void addText(String text) {
left.append(text);
}
public int deleteText(int k) {
k = Math.min(k, left.length());
left.setLength(left.length() - k);
return k;
}
public String cursorLeft(int k) {
while (k > 0 && !left.isEmpty()) {
right.append(left.charAt(left.length() - 1));
left.setLength(left.length() - 1);
k--;
}
return text();
}
public String cursorRight(int k) {
while (k > 0 && !right.isEmpty()) {
left.append(right.charAt(right.length() - 1));
right.setLength(right.length() - 1);
k--;
}
return text();
}
private String text() {
return left.substring(Math.max(left.length() - 10, 0));
}
}
{code}
was:
for leetcode problem:
https://leetcode.com/problems/design-a-text-editor/description/
the java code below: need StringBuilder to
{{{color:#0077aa}class{color} {color:#dd4a68}TextEditor{color}
{color:#999999}{{color}{color:#0077aa}private{color}
{color:#0077aa}final{color} {color:#dd4a68}StringBuilder{color} left
{color:#9a6e3a}={color} {color:#0077aa}new{color}
{color:#dd4a68}StringBuilder{color}{color:#999999}({color}{color:#999999}){color}{color:#999999};{color}{color:#0077aa}private{color}
{color:#0077aa}final{color} {color:#dd4a68}StringBuilder{color} right
{color:#9a6e3a}={color} {color:#0077aa}new{color}
{color:#dd4a68}StringBuilder{color}{color:#999999}({color}{color:#999999}){color}{color:#999999};{color}{color:#0077aa}public{color}
{color:#0077aa}void{color}
{color:#dd4a68}addText{color}{color:#999999}({color}{color:#dd4a68}String{color}
text{color:#999999}){color} {color:#999999}{{color}
left{color:#999999}.{color}{color:#dd4a68}append{color}{color:#999999}({color}text{color:#999999}){color}{color:#999999};{color}{color:#999999}}{color}{color:#0077aa}public{color}
{color:#0077aa}int{color}
{color:#dd4a68}deleteText{color}{color:#999999}({color}{color:#0077aa}int{color}
k{color:#999999}){color} {color:#999999}{{color} k
{color:#9a6e3a}={color}
{color:#dd4a68}Math{color}{color:#999999}.{color}{color:#dd4a68}min{color}{color:#999999}({color}k{color:#999999},{color}
left{color:#999999}.{color}{color:#dd4a68}length{color}{color:#999999}({color}{color:#999999}){color}{color:#999999}){color}{color:#999999};{color}
left{color:#999999}.{color}{color:#dd4a68}setLength{color}{color:#999999}({color}left{color:#999999}.{color}{color:#dd4a68}length{color}{color:#999999}({color}{color:#999999}){color}
{color:#9a6e3a}-{color}
k{color:#999999}){color}{color:#999999};{color}{color:#0077aa}return{color}
k{color:#999999};{color}{color:#999999}}{color}{color:#0077aa}public{color}
{color:#dd4a68}String{color}
{color:#dd4a68}cursorLeft{color}{color:#999999}({color}{color:#0077aa}int{color}
k{color:#999999}){color} {color:#999999}{{color}{color:#0077aa}while{color}
{color:#999999}({color}k {color:#9a6e3a}>{color} {color:#990055}0{color}
{color:#9a6e3a}&&{color}
{color:#9a6e3a}!{color}left{color:#999999}.{color}{color:#dd4a68}isEmpty{color}{color:#999999}({color}{color:#999999}){color}{color:#999999}){color}
{color:#999999}{{color}
right{color:#999999}.{color}{color:#dd4a68}append{color}{color:#999999}({color}left{color:#999999}.{color}{color:#dd4a68}charAt{color}{color:#999999}({color}left{color:#999999}.{color}{color:#dd4a68}length{color}{color:#999999}({color}{color:#999999}){color}
{color:#9a6e3a}-{color}
{color:#990055}1{color}{color:#999999}){color}{color:#999999}){color}{color:#999999};{color}
left{color:#999999}.{color}{color:#dd4a68}setLength{color}{color:#999999}({color}left{color:#999999}.{color}{color:#dd4a68}length{color}{color:#999999}({color}{color:#999999}){color}
{color:#9a6e3a}-{color}
{color:#990055}1{color}{color:#999999}){color}{color:#999999};{color}
k{color:#9a6e3a}--{color}{color:#999999};{color}{color:#999999}}{color}{color:#0077aa}return{color}
{color:#dd4a68}text{color}{color:#999999}({color}{color:#999999}){color}{color:#999999};{color}{color:#999999}}{color}{color:#0077aa}public{color}
{color:#dd4a68}String{color}
{color:#dd4a68}cursorRight{color}{color:#999999}({color}{color:#0077aa}int{color}
k{color:#999999}){color} {color:#999999}{{color}{color:#0077aa}while{color}
{color:#999999}({color}k {color:#9a6e3a}>{color} {color:#990055}0{color}
{color:#9a6e3a}&&{color}
{color:#9a6e3a}!{color}right{color:#999999}.{color}{color:#dd4a68}isEmpty{color}{color:#999999}({color}{color:#999999}){color}{color:#999999}){color}
{color:#999999}{{color}
left{color:#999999}.{color}{color:#dd4a68}append{color}{color:#999999}({color}right{color:#999999}.{color}{color:#dd4a68}charAt{color}{color:#999999}({color}right{color:#999999}.{color}{color:#dd4a68}length{color}{color:#999999}({color}{color:#999999}){color}
{color:#9a6e3a}-{color}
{color:#990055}1{color}{color:#999999}){color}{color:#999999}){color}{color:#999999};{color}
right{color:#999999}.{color}{color:#dd4a68}setLength{color}{color:#999999}({color}right{color:#999999}.{color}{color:#dd4a68}length{color}{color:#999999}({color}{color:#999999}){color}
{color:#9a6e3a}-{color}
{color:#990055}1{color}{color:#999999}){color}{color:#999999};{color}
k{color:#9a6e3a}--{color}{color:#999999};{color}{color:#999999}}{color}{color:#0077aa}return{color}
{color:#dd4a68}text{color}{color:#999999}({color}{color:#999999}){color}{color:#999999};{color}{color:#999999}}{color}{color:#0077aa}private{color}
{color:#dd4a68}String{color}
{color:#dd4a68}text{color}{color:#999999}({color}{color:#999999}){color}
{color:#999999}{{color}{color:#0077aa}return{color}
left{color:#999999}.{color}{color:#dd4a68}substring{color}{color:#999999}({color}{color:#dd4a68}Math{color}{color:#999999}.{color}{color:#dd4a68}max{color}{color:#999999}({color}left{color:#999999}.{color}{color:#dd4a68}length{color}{color:#999999}({color}{color:#999999}){color}
{color:#9a6e3a}-{color} {color:#990055}10{color}{color:#999999},{color}
{color:#990055}0{color}{color:#999999}){color}{color:#999999}){color}{color:#999999};{color}{color:#999999}}{color}{color:#999999}}{color}}}
> Create extention method to make StringBuilder behaving like stack
> -----------------------------------------------------------------
>
> Key: GROOVY-11655
> URL: https://issues.apache.org/jira/browse/GROOVY-11655
> Project: Groovy
> Issue Type: New Feature
> Reporter: John
> Priority: Major
>
> for leetcode problem:
> [https://leetcode.com/problems/design-a-text-editor/description/]
> the java code below, suppose StringBuilder to be a contain of chars ,
> meanwhile as a stack.
>
> {code:java}
> class TextEditor {
> private final StringBuilder left = new StringBuilder();
> private final StringBuilder right = new StringBuilder();
> public void addText(String text) {
> left.append(text);
> }
> public int deleteText(int k) {
> k = Math.min(k, left.length());
> left.setLength(left.length() - k);
> return k;
> }
> public String cursorLeft(int k) {
> while (k > 0 && !left.isEmpty()) {
> right.append(left.charAt(left.length() - 1));
> left.setLength(left.length() - 1);
> k--;
> }
> return text();
> }
> public String cursorRight(int k) {
> while (k > 0 && !right.isEmpty()) {
> left.append(right.charAt(right.length() - 1));
> right.setLength(right.length() - 1);
> k--;
> }
> return text();
> }
> private String text() {
>
> return left.substring(Math.max(left.length() - 10, 0));
> }
> }
> {code}
>
>
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