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ArrayAndArrayList.java
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ArrayAndArrayList.java
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import java.util.ArrayList;
public class ArrayAndArrayList {
public int howMany(int[] array, int element) {
int count = 0;
for(int i = 0; i < array.length; i++)
if(array[i] == element)
count++;
return count; }
public int findMax(int[] array){
if(array.length == 0)
return -1;
int max = array[0];
for(int i = 0; i < array.length; i++)
if(array[i] > max)
max = array[i];
return max;
}
public ArrayList<Integer> maxArray(int[] array) {
if(array.length == 0)
return null;
ArrayList<Integer> list = new ArrayList<>();
int max = findMax(array);
for(int i = 0; i < array.length; i++)
if(array[i] == max)
list.add(max);
return list;
}
public void swapZero(int[] array) {
int last = array.length;
for(int i = 0; i < last; i++) {
if(array[i] == 0) {
for(int j = i + 1; j < last; j++)
array[j - 1] = array[j];
array[last - 1] = 0;
last--;
i--;
}
}
}
}