Core Java Programming Challenges #29 | Coding Challenges | Naresh IT

Core Java Programming Challenges #29 | Coding Challenges | Naresh IT

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[gsrcreations]

class PushZero
{
// Function which pushes all zeros to end of an array.
static void pushZerosToEnd(int arr[], int n)
{
int count = 0; // Count of non-zero elements

// Traverse the array. If element encountered is
// non-zero, then replace the element at index 'count'
// with this element
for (int i = 0; i < n; i++)
if (arr[i] != 0)
arr[count++] = arr[i]; // here count is
// incremented

// Now all non-zero elements have been shifted to
// front and 'count' is set as index of first 0.
// Make all elements 0 from count to end.
while (count < n)
arr[count++] = 0;
}

/*Driver function to check for above functions*/
public static void main (String[] args)
{
int arr[] = {3, 0, 5, 6, 0, 0, 7, 0, 0, 2, 7, 5};
int n = arr.length;
pushZerosToEnd(arr, n);
System.out.println("Array after pushing zeros to the back: ");
for (int i=0; i<n; i++)
System.out.print(arr[i]+" ");
}
}

[MaulikSakhida]

public class Test {

public static void main(String[] args) {
int[] arr = {0, 0, 5, 6, 0, 0, 7, 0, 0, 2, 7, 5};
int i = 0;
int j = arr.length-1;

while(i <= j){
while(arr[i] != 0){
i++;
}
while(arr[j] == 0){
j--;
}
swap(arr, i, j);
if(i < j){
i++;
j--;
}
}

}

private static void swap(int[] arr, int i, int j) {
int temp = arr[i];
arr[i] = arr[j];
arr[j] = temp;
}
}

[nadhikutty]

I like your c videos sir please use board sir that way understand easily

[SunilKumarSunil]

public class Challenge27 {

public static void main(String[] args) {

int arr[] = {3, 0, 5, 6, 0, 0, 7, 0, 0, 2, 7, 5};
int count = 0;
for(int i = 0;i<arr.length;i++)
{
if(arr[i]!=0)
{
arr[count]=arr[i];
count++;
}
}
for(int i=count+1;i<arr.length;i++)
{
arr[i]=0;
}

for(int i = 0;i<arr.length;i++)
{
System.out.print(arr[i]+", ");
}
}

}

Output
3, 5, 6, 7, 2, 7, 5, 0, 0, 0, 0, 0,

[nadhikutty]

sir I have one doubt what is difference between java and core java

[samahmahdi]

import java.util.Arrays;

public class Challenge29 {
public static void main(String[] args) {
int a[] = {3, 2, 0, 1, 2, 3, 0, 9, 6, 0, 5, 7};
int temp;
for(int i = 0;i<a.length; i++){
if(a[i] == 0){
for(int j=i+1;j<a.length;j++){
if(a[j]!=0){
temp = a[i];
a[i] = a[j];
a[j] = temp;
break;
}
}
}
}
}
}