Basics Programs in JAVA

Find the 4th nearest prime number for a given number n. Write a program for it.

Input : NA

Output : NA

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Write a program to generate a simple pattern.
1
12
123
1234
123
12
1

Input : 4

Output :

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Given an array, print the Next Greater Element (NGE) for every element. The Next greater Element for an element x is the first greater element on the right side of x in the array. Elements for which no greater element exist, consider next greater element as -1.

Input : NA

Output : NA

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Find the count of prime numbers between l and r where 1 <= l, r <= 10 ^ 9 and those numbers whose digits are not even numbers and digits are less than 5

Eg :- l = 1
r = 10

Input : NA

Output : NA

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A prime number is a whole number greater than 1 that is divisible only by itself and the number 1.

Given 'n' (1 <= n <= 100000), find the nth prime number.

Input : An integer n

Output :

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A Derangement is a permutation of n elements, such that no element appears in its original position. For example, a derangement of {0, 1, 2, 3} is {2, 3, 1, 0}.

Given a number n, find the total number of Derangements of a set of n elements.

Input : 1st Input: n = 2

For two elements say {0, 1}, there is only one
possible derangement {1, 0}

2nd Input: n = 3

For three elements say {0, 1, 2}, there are two
possible derangements {2, 0, 1} and {1, 2, 0}

Output :

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Every character in the input string is followed by its frequency.
Write a function to decrypt the string and find the nth character of the decrypted string. If no character exists at that positionthen then return "-1".
For eg:- If the input string is "a2b3" the decrypted string is "aabbb".
Note: The frequency of encrypted string cannot be greater than a single digit i.e.<10.

Explanation:

The decrypted string is "abccc", hence the 5th character in the decrypted string is "c".

Input : Input Specification:
Input1: A string.
Input2:5

Output :

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Given a number of objects N(non-repetitive object) Find the number of arrangements in which no objects occur at original positions.

Input : Input1: N, the number of Objects.
Input1: 3

Output :

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Consider the following series: 1,1,2,3,4,9,8,27,16,81,32,243,64,729,128,2187…

This series is a mixture of 2 series - all the odd terms in this series form a geometric series and all the even terms form yet another geometric series. Write a program to find the Nth term in the series.

The value N in a positive integer that should be read from STDIN. The Nth term that is calculated by the program should be written to STDOUT. Other than value of n th term,no other character / string or message should be written to STDOUT. For example , if N=16, the 16th term in the series is 2187, so only value 2187 should be printed to STDOUT.

You can assume that N will not exceed 30.

Input : if N=16

Output :

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Consider the below series : 0,0,2,1,4,2,6,3,8,4,10,5,12,6,14,7,16,8
This series is a mixture of 2 series all the odd terms in this series form even numbers in ascending order and every even terms is derived from the previous term using the formula (x/2)

Write a program to find the nth term in this series.

The value n in a positive integer that should be read from STDIN the nth term that is calculated by the program should be written to STDOUT. Other than the value of the nth term no other characters /strings or message should be written to STDOUT.

For example if n=10,the 10 th term in the series is to be derived from the 9th term in the series. The 9th term is 8 so the 10th term is (8/2)=4. Only the value 4 should be printed to STDOUT.

You can assume that the n will not exceed 20,000.

Input : NA

Output : NA

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