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Number problems

write a program to read a number and print all of its digits separately.

write a program to read a number and print only odd digits of a number.

write a program to read a number and print event digits of a number.

write a program to read a number and print greatest digit of a number.

write a program to read a number and print its smallest digit.

write a program to read a number and count the number of digits present in a number.

write a program to read a number and count the number of even digits present in a number.

write a program to read a number and count the number of odd digits present in a number.

write a program to read a number and search the 0 digit present in a number or not. If present print 'ZERO is Present in a NUMBER'.

write a program to read a number and search and print the duplicate digit present in a number.

write a program to read a number and remove duplicate digits from the number.

write a program to read a number and remove odd digits from the number.

write a program to read a number and find out the digits are in increasing order or not?.

write a program to read a number and remove even digits from the number.

write a program to read a number and find out the digits are in decreasing order or not.

write a program to read an increasing digits number and insert digit(x) in a number at its appropriate place.

write a program to read a number and print all of its factors of a number.

write a program to read a number and prints its prime factors.

write a program to read a number and find the sum of its factors.

write a program to read a number and find out the number is perfect number or not. [A number is said to be perfect number when sum of all its factors is equal to the number example : number 6, The factors sum is 1 + 2 + 3 = 6, so 6 is a perfect number. ]

Write a Java program to check whether a given number is ugly. In number system, ugly numbers are positive numbers whose only prime factors are 2, 3 or 5. First 10 ugly numbers are 1, 2, 3, 4, 5, 6, 8, 9, 10, 12. By convention, 1 is included. Test Date:Input an integer number: 235

Write a Java program to generate and show all Kaprekar numbers less than 1000. Expected Output : 1 1 0 + 1 9 81 8 + 1 45 2025 20 + 25 55 3025 30 + 25 99 9801 98 + 01 297 88209 88 + 209 703 494209 494 + 209 999 998001 998 + 001 8 Kaprekar numbers.

Write a Java program to check whether a number is a Duck Number or not. Note: A Duck number is a number which has zeroes present in it, but there should be no zero present in the beginning of the number. For example 3210, 7056, 8430709 are all duck numbers whereas 08237, 04309 are not.

write a program to read two numbers A and B and find out the numbers A and B are equal or not. The equality is done on the basis of digits presence irrespective of its digit position. For example 3258 and 8235 are equal.

write a program to read two numbers A and B and print its Highest Common Factor(HCF).

Write a program to read two numbers A, B and print its LCM.

Write a program to print all even numbers up to N.

Write a program to print all natural numbers upto N. ex. 1, 2, 3, 4, 5, .... N

write a program to print all 5 multiples upto 100 example 5, 10, 15, 20, 25, ..... 100

write a program to print the following series 1, 2, 4, 8, 16, 32, 64 . . . . N terms

write a program to print the following series 1, 2, 6, 24, 120, . . . . N terms

write a program to print the following series 1, 2, 4, 7, 11, 15, 20 . . . . N terms

write a program to print the following series 1, -2, 3, -4, 5, -6, 7, -8, 9, -10, . . . . N terms

write a program to print multiplication table of N up to 20 lines 1 x N = N 2 x N = ... 3 x 4 - ... .... ...

write a program to print multiplication table for numbers 2 to N. Each table must be in multiplication table format up to 12 lines.

write a program to print the following series x^1, x^2, x^4, x^8, x^16, x^32, x^64 . . . . N terms

write a program to print the following series 1/1, 2/2, 4/3, 8/4, 16/5, 32/6, 64/7 . . . . N terms

write a program to print the following series 0, 1, 1, 2, 3, 5, 8, 13, 21, .... N terms

write a program to print the following series. 1, 2, 3, 4, 5, 6, 7, 8 ..... N terms 2, 4, 6, 8, 10, 12, ......... N terms 1, 3, 5, 7, 9, 11, 13, 15 .... N terms 4,8,12,16,20, 24, 28, 32, ..... N terms 2, 4, 5, 16, 32, 64, 128, 256.... N terms 5, 10, 15, 20, 25, 30, .... N terms

write a program to generate and print the following complex series. 1, 3, 6, 10, 15, 21 .... N terms 2, 4, 12, 48,...... N terms 2, 2, 3, 5, 8, 12, 17 .... N terms 1,1,2,6,24,120, .... N terms 1, 2, 8, 64, ... N terms

write a program to find the reverse number of input number.

write a program to read an input decimal number and exchange its integer, fractional portions.

Write a Java program to generate and show all Kaprekar numbers less than 1000. Expected Output : 1 1 0 + 1 9 81 8 + 1 45 2025 20 + 25 55 3025 30 + 25 99 9801 98 + 01 297 88209 88 + 209 703 494209 494 + 209 999 998001 998 + 001 8 Kaprekar numbers.

Write a Java program to check if a number is a cube or not. In arithmetic and algebra, the cube of a number n is its third power: the result of the number multiplied by itself twice: n3 = n × n × n. Input Data: Input a number: 8 Expected Output Number is a cube.

Write a program to read a number and find out the numberis Keith Number or not. For example, 197 is a keith number because its digits (1, 9, 7) creates the sequence 1,9,7,17,33,57,107,197, in which number is part of it.

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