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130 lines (106 loc) · 3.58 KB
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import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Collections;
import java.util.Random;
import org.omg.CORBA.LongSeqHelper;
public class PuzzleJava {
public ArrayList first(int[] arr){
ArrayList<Integer> newarr = new ArrayList<Integer>();
for(int i = 0; i<arr.length; i++){
System.out.println(arr[i]);
if(arr[i]>10){
newarr.add(arr[i]);
}
}
return newarr;
}
public void alphabetShuffle(){
ArrayList<Object> alphabet = new ArrayList<Object>();
alphabet.add("a");
alphabet.add("b");
alphabet.add("c");
alphabet.add("d");
alphabet.add("e");
alphabet.add("f");
alphabet.add("g");
alphabet.add("h");
alphabet.add("i");
alphabet.add("j");
alphabet.add("k");
alphabet.add("l");
alphabet.add("m");
alphabet.add("n");
alphabet.add("o");
alphabet.add("p");
alphabet.add("q");
alphabet.add("r");
alphabet.add("s");
alphabet.add("t");
alphabet.add("u");
alphabet.add("v");
alphabet.add("w");
alphabet.add("x");
alphabet.add("y");
alphabet.add("z");
System.out.println(alphabet);
Collections.shuffle(alphabet);
System.out.println(alphabet);
System.out.println(alphabet.get(alphabet.size()-1));
System.out.println(alphabet.get(0));
if(alphabet.get(0) == "a" || alphabet.get(0) == "e" || alphabet.get(0) == "i" || alphabet.get(0) == "o" || alphabet.get(0) == "u"){
System.out.println("The first letter is a vowel");
}
}
public void randomTen(){
int[] arr;
arr = new int[10];
Random ran = new Random();
for(int i = 0; i<arr.length; i++){
int nxt = ran.nextInt(100-55) + 55;
arr[i] = nxt;
}
System.out.println(Arrays.toString(arr));
}
public void randomTenSorted(){
int[] arr;
arr = new int[10];
Random ran = new Random();
for(int i = 0; i<arr.length; i++){
int nxt = ran.nextInt(100-55) + 55;
arr[i] = nxt;
}
ArrayList<Integer> intList = new ArrayList<Integer>();
for(int i : arr){
intList.add(i);
}
Collections.sort(intList);
System.out.println(intList);
}
public String randomString(int n){
// Random ran = new Random();
String AlphaNumericString = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"+"0123456789"+"abcdefghijklmnopqrstuvxyz";
StringBuilder sb = new StringBuilder(n);
for(int i = 0; i<n; i++){
int index = (int)(AlphaNumericString.length()*Math.random());
sb.append(AlphaNumericString.charAt(index));
}
return sb.toString();
}
public void random10Strings(int n){
ArrayList<String> longArray = new ArrayList<String>();
for(int j =0; j<10; j++){
// Random ran = new Random();
String AlphaNumericString = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"+"0123456789"+"abcdefghijklmnopqrstuvxyz";
StringBuilder sb = new StringBuilder(n);
for(int i = 0; i<n; i++){
int index = (int)(AlphaNumericString.length()*Math.random());
sb.append(AlphaNumericString.charAt(index));
}
System.out.println(sb.toString());
String str = sb.toString();
longArray.add(str);
}
System.out.println(longArray);
}
}