Table Of Contents
- 1. Write a java code for count odd and even numbers in array
- 2. Write a java code for sum of elements in the array
- 3. Write a java code for to find largest element in array
- 4. Write a java code for to find Largest and Smallest Element in the Array
- 5. Write a java code for Reverse Array
- 6. Write a java code for Search an Element in Array
1. Write a java code for count odd and even numbers in array
public static void main(String[] args) {
int[] arr = new int[10];
int size, i;
Scanner sc = new Scanner(System.in);
size = sc.nextInt();
for(i = 0; i < size; i++)
arr[i] = sc.nextInt();
//Write your code here
int odd_count = 0, even_count = 0;
for(i=0; i < size; i++)
{
if(arr[i] % 2 == 0)
even_count++;
else
odd_count++;
}
System.out.println("Even Number Count = " + even_count + "\n" + "Odd Number Count = " + odd_count);
}2. Write a java code for sum of elements in the array
public static void main(String[] args) {
int[] arr = new int[10];
int n, i;
Scanner sc = new Scanner(System.in);
n = sc.nextInt();
for(i = 0; i < n; i++)
arr[i] = sc.nextInt();
//Write your code here
int sum = 0;
for(i = 0; i < n; i++)
sum += arr[i];
System.out.println(sum);
}3. Write a java code for to find largest element in array
public static void main(String[] args) {
int[] arr = new int[10];
int n, i;
Scanner sc = new Scanner(System.in);
n = sc.nextInt();
for (i = 0; i < n; i++)
arr[i] = sc.nextInt();
//Write your code here
int max = arr[0];
for(i = 0; i < n; i++)
if(arr[i] > max)
max = arr[i];
System.out.println("Max = " + max);
}4. Write a java code for to find Largest and Smallest Element in the Array
public static void main(String[] args) {
int[] arr = new int[10];
int n, i;
Scanner sc = new Scanner(System.in);
n = sc.nextInt();
for (i = 0; i < n; i++)
arr[i] = sc.nextInt();
//Write your code here
int max = arr[0], min = arr[0];
for(i = 0; i < n; i++)
{
if(arr[i] > max)
max = arr[i];
if(arr[i] < min)
min = arr[i];
}
System.out.println("Max = " + max);
System.out.println("Min = " + min);
}5. Write a java code for Reverse Array
public static void main(String[] args) {
int[] arr = new int[10];
int n, i;
Scanner sc = new Scanner(System.in);
n = sc.nextInt();
for (i = 0; i < n; i++)
arr[i] = sc.nextInt();
//Write your code here
int lastIndex = n-1;
for(i = 0; i < n/2; i++)
{
int temp = arr[i];
arr[i] = arr[lastIndex-i];
arr[lastIndex-i] = temp;
}
for(i = 0; i < n ; i++)
System.out.print(arr[i] + " ");
}6. Write a java code for Search an Element in Array
public static void main(String[] args) {
int[] arr = new int[10];
int n, i, key;
Scanner sc = new Scanner(System.in);
n = sc.nextInt();
for (i = 0; i < n; i++)
arr[i] = sc.nextInt();
key = sc.nextInt();
//Write your code here
int flag = 0;
for(i = 0; i < n; i++)
if(arr[i] == key)
{
flag = 1;
break;
}
if(flag == 1)
System.out.println("Key found");
else
System.out.println("Key not found");
}