116 lines
3.1 KiB
Java
116 lines
3.1 KiB
Java
package de.joethei.hs.java2.praktikum.praktikum2;
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import java.util.ArrayList;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Set;
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public class CharCollection implements Cloneable{
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private List<Character> list = new ArrayList<>();
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public CharCollection(char... cc) {
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for(char c:cc) this.list.add(c);
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}
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public CharCollection(String s) {
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for(char c : s.toCharArray()) {
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this.list.add(c);
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}
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}
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public int size() {
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return this.list.size();
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}
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public int count(char c) {
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int result = 0;
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for(char b:list) {
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if(b == c)result ++;
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}
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return result;
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}
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public int different() {
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Set<Character> set = new HashSet<>(list);
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return set.size();
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}
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public char top() {
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if(list.isEmpty()) return 0;
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int max = 0;
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char character ='_';
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for(char c : list) {
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int count = count(c);
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if(count >= max) {
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character = c;
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max = count;
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}
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}
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return character;
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}
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public CharCollection moreThan(int m) {
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ArrayList<Character> list2 = new ArrayList<>();
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for(char c:this.list){
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if(this.count(c) > m) {
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list2.add(c);
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}
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}
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StringBuilder s = new StringBuilder();
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for(char c:list2) s.append(c);
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return new CharCollection(s.toString());
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}
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public CharCollection except(CharCollection cc) {
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ArrayList<Character> list = new ArrayList<>(this.list);
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boolean removeCharacterOnce = false;
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for(int i=0; i<list.size(); i++){
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for(int w=0; w<cc.list.size(); w++) {
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if(cc.list.get(w)==list.get(i) && !removeCharacterOnce) {
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removeCharacterOnce=true;
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cc.list.remove(w);
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list.remove(i);
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}
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}
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if(removeCharacterOnce) i--;
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removeCharacterOnce = false;
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}
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StringBuilder s = new StringBuilder();
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for(char c:list) s.append(c);
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return new CharCollection(s.toString());
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}
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public boolean isSubset(CharCollection cc) {
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ArrayList<Character> list = new ArrayList<>(this.list);
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for(char c:cc.list) {
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if(!list.contains(c)) return false;
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else list.remove(list.indexOf(c));
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}
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return true;
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}
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@Override
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public String toString() {
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return list.toString().replace('[', '(').replace(']', ')');
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}
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@Override
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public boolean equals(Object o) {
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if(o instanceof CharCollection) {
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CharCollection c = (CharCollection) o;
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if(this.size() != c.size()) return false;
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return this.isSubset(c);
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}return false;
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}
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@Override
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public int hashCode() {
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int result = 0;
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for(char c : list) {
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result += c;
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}
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return result * list.size();
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}
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} |