英文:
How to Shuffle char From Array of Strings?
问题
String names_ofcolor[] = {"red", "green", "blue"};int random = (int) (Math.random() * names_ofcolor.length);for (int j = 0; j < names_ofcolor[random].length(); j++) {Button btn = new Button(this);btn.setId(j);btn.setBackgroundColor(Color.WHITE);btn.setTextSize(16);linearlayout.addView(btn);btn.setText("" + names_ofcolor[random].charAt(j));}
英文:
> i am trying to make game guess the word but I cant shuffle char from
> array of string
String names_ofcolor[] = {"red", "green", "blue"};int random = (int) (Math.random() * names_ofcolor.length);for (int j = 0; j < names_ofcolor[random].length(); j++) {Button btn = new Button(this);btn.setId(j);btn.setBackgroundColor(Color.WHITE);btn.setTextSize(16);linearlayout.addView(btn);btn.setText("" + names_ofcolor[random].charAt(j));}
答案1
得分: 0
创建一个从 0 到 names_ofcolor[random].length() - 1 的索引列表，并使用 Collections::shuffle 进行洗牌。然后，您可以使用洗牌后的索引来设置按钮的标签。
String names_ofcolor[] = { "red", "green", "blue" };int random = (int) (Math.random() * names_ofcolor.length);List<Integer> indices = new ArrayList<Integer>();for (int i = 0; i < names_ofcolor[random].length(); i++) {indices.add(i);}Collections.shuffle(indices);for (int j = 0; j < names_ofcolor[random].length(); j++) {Button btn = new Button(this);btn.setId(j);btn.setBackgroundColor(Color.WHITE);btn.setTextSize(16);linearlayout.addView(btn);btn.setText("" + names_ofcolor[random].charAt(indices.get(j)));}
一个快速演示:
import java.util.ArrayList;import java.util.Collections;import java.util.List;public class Main {public static void main(String[] args) {String names_ofcolor[] = { "red", "green", "blue" };int random = (int) (Math.random() * names_ofcolor.length);List<Integer> indices = new ArrayList<Integer>();for (int i = 0; i < names_ofcolor[random].length(); i++) {indices.add(i);}Collections.shuffle(indices);for (int j = 0; j < names_ofcolor[random].length(); j++) {String label = "" + names_ofcolor[random].charAt(indices.get(j));System.out.print(label);}}}
一个样本运行:
regne
另一个样本运行:
erd
另一个样本运行:
elbu
英文:
Create a List of indices from 0 to names_ofcolor[random].length() - 1 and shuffle it using Collections::shuffle. Then, you can use the shuffled indices to set the label of the button.
String names_ofcolor[] = { "red", "green", "blue" };int random = (int) (Math.random() * names_ofcolor.length);List<Integer> indices = new ArrayList<Integer>();for (int i = 0; i < names_ofcolor[random].length(); i++) {indices.add(i);}Collections.shuffle(indices);for (int j = 0; j < names_ofcolor[random].length(); j++) {Button btn = new Button(this);btn.setId(j);btn.setBackgroundColor(Color.WHITE);btn.setTextSize(16);linearlayout.addView(btn);btn.setText("" + names_ofcolor[random].charAt(indices.get(j)));}
A quick demo:
import java.util.ArrayList;import java.util.Collections;import java.util.List;public class Main {public static void main(String[] args) {String names_ofcolor[] = { "red", "green", "blue" };int random = (int) (Math.random() * names_ofcolor.length);List<Integer> indices = new ArrayList<Integer>();for (int i = 0; i < names_ofcolor[random].length(); i++) {indices.add(i);}Collections.shuffle(indices);for (int j = 0; j < names_ofcolor[random].length(); j++) {String label = "" + names_ofcolor[random].charAt(indices.get(j));System.out.print(label);}}}
A sample run:
regne
Another sample run:
erd
Another sample run:
elbu
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论