**Contents**show

## How do you count numbers in Java?

Read a number from user. Create an integer (count) initialize it with 0. **Divide the number with 10**. till the number is 0 and for each turn increment the count.

## How do you find the number of numerical digits in a string?

To calculate the total number of letters and digits in the given string, we have **to first iterate over the whole string**. If we get an alphabet, then we increment the letter count; otherwise, if we extract a digit, then increment the digit count. Take an input string.

## How do you count the number of numbers in a string in Java?

**Approach:**

- Create one integer variable and initialize it with 0.
- Start string traversal.
- If the ASCII code of character at the current index is greater than or equals to 48 and less than or equals to 57 then increment the variable.
- After the end of the traversal, print variable.

## Is palindrome a number?

Palindrome number in c: **A palindrome number is a number that is same after reverse**. For example 121, 34543, 343, 131, 48984 are the palindrome numbers.

## How do you count the number of digits?

**Program to count number of digits in an integer using a loop**

- #include <stdio.h>
- int main()
- {
- int n;
- int count = 0;
- printf(“nEnter the number: “);
- scanf(“%d”, &n);
- while(n != 0)

## How do you find the digit of a string in Python?

**Use str.** **isdigit() to check if a string contains a number**

- contains_digit = False.
- s = “abc1” Example string.
- for character in s: Iterate over `s`
- if character. isdigit(): Test for digit.
- contains_digit = True.
- print(contains_digit)

## How do you count the number of digits in a string in C++?

**Algorithm:**

- Initialize the variables.
- Accept the input.
- Initialize a for loop.
- Iterate each character of the string through the loop.
- If the character iterated is a numeric value then, add that value.
- Terminate loop at the end of string.
- Print result.

## Is Armstrong a number?

Armstrong number is **a number that is equal to the sum of cubes of its digits**. For example 0, 1, 153, 370, 371 and 407 are the Armstrong numbers.

## What is string method in Java?

All String Methods

Method | Description | Return Type |
---|---|---|

toString() | Returns the value of a String object | String |

toUpperCase() | Converts a string to upper case letters | String |

trim() | Removes whitespace from both ends of a string | String |

valueOf() | Returns the string representation of the specified value | String |

## What are the ascii value of numbers?

ASCII is a 7-bit character set containing 128 characters. It contains the numbers from **0-9**, the upper and lower case English letters from A to Z, and some special characters.

## How do I convert a char to a string in Java?

**Java char to String Example: Character.** **toString() method**

- public class CharToStringExample2{
- public static void main(String args[]){
- char c=’M’;
- String s=Character.toString(c);
- System.out.println(“String is: “+s);
- }}

## Is 999 a palindrome number?

{101, 111, 121, 131, 141, 151, 161, 171, 181, 191, …, 909, 919, 929, 939, 949, 959, 969, 979, 989, **999**} There are likewise 90 palindromic numbers with four digits (again, 9 choices for the first digit multiplied by ten choices for the second digit. … so there are 199 palindromic numbers below 10^{4}.

## Are Palindromes lucky?

Some **cultures believe palindrome dates to be lucky**. Which is why many people choose these dates for wedding celebrations. It also looks attractive to have the unique pattern of numbers appear on an invitation that’s a lifetime keepsake; dates such as 02.02.

## What is palindrome number?

A palindrome is **a word or number that is read the same backwards as it is forwards**. A palindromic number is the same number that is read forward and backwards. Task 1: Investigate these sentences.