In the previous article, we have discussed Python Program to Calculate GST

Given a String, and the task is to add the given number of trialing Zeros to the given String.

**ljust() method :**

We can add trailing zeros to the string using the ljust() method. It has two parameters, x, and y, where x is the length of the string. What will this method accomplish? It will simply go through a string and then to the length of the string that we require, and if both are not the same, it will pad those zeros that they have passed through a string and then store them in another.

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**Examples:**

**Example1:**

**Input:**

Given String = hello btechgeeks no of zeros to be added = 5

**Output:**

The above given string = hello btechgeeks The above Given string with added given number of trailing zeros = hello btechgeeks00000

**Example1:**

**Input:**

Given String = good morning btechgeeks no of zeros to be added = 10

**Output:**

Enter some Random String = good morning btechgeeks The above given string = good morning btechgeeks Enter some Random Number = 10 The above Given string with added given number of trailing zeros = good morning btechgeeks0000000000

## Program to Add Trailing Zeros to String

Below are the ways to add trailing Zeros to the given String

### Method #1: Using ljust() Method (Static Input)

**Approach:**

- Give the string as static input and store it in a variable.
- Print the above-given string.
- Give the number of trailing zeros to be added as static input and store it in another variable.
- Calculate the length of the above-given string using the built-in len() function.
- Add it with the given number of zeros and store it in another variable.
- Add the given number of trailing zeros to the above-given String Using the built-in ljust() method and store it in another variable.
- Print the above-Given string with added given the number of trailing Zeros.
- The Exit of the program.

**Below is the implementation:**

# Give the string as static input and store it in a variable. gvn_strng = 'hello btechgeeks' # Print the above given string . print("The above given string = " + str(gvn_strng)) # Give the number of trailing zeros to be added as static input and store it in another # variable. No_trzers = 5 # Calculate the length of the above given string using built- in len() function . # Add it with the given number of zeros and store it in another variable. tot_lenth = No_trzers + len(gvn_strng) # Add the given number of trailing zeros to the above given String Using built-in ljust() # method and store it in another variable. finl_reslt = gvn_strng.ljust(tot_lenth, '0') # Print the above Given string with added given number of trailing Zeros. print("The above Given string with added given number of trailing zeros = ", finl_reslt)

**Output:**

The above given string = hello btechgeeks The above Given string with added given number of trailing zeros = hello btechgeeks00000

### Method #2 : Using ljust() Method (User Input)

**Approach:**

- Give the string as User input using the input() function and store it in a variable.
- Print the above given string .
- Give the number of trailing zeros to be added as User input using the int(input()) function and store it in another variable.
- Calculate the length of the above given string using built- in len() function .
- Add it with the given number of zeros and store it in another variable.
- Add the given number of trailing zeros to the above given String Using built-in ljust() method and store it in another variable.
- Print the above Given string with added given number of trailing Zeros.
- The Exit of the program.

**Below is the implementation:**

# Give the string as User input using the input() function and store it in a variable. gvn_strng = input("Enter some Random String = ") # Print the above given string . print("The above given string = " + str(gvn_strng)) # Give the number of trailing zeros to be added as User input using the int(input()) function and store it in another # variable. No_trzers = int(input("Enter some Random Number = ")) # Calculate the length of the above given string using built- in len() function . # Add it with the given number of zeros and store it in another variable. tot_lenth = No_trzers + len(gvn_strng) # Add the given number of trailing zeros to the above given String Using built-in ljust() # method and store it in another variable. finl_reslt = gvn_strng.ljust(tot_lenth, '0') # Print the above Given string with added given number of trailing Zeros. print("The above Given string with added given number of trailing zeros = ", finl_reslt)

**Output:**

Enter some Random String = good morning btechgeeks The above given string = good morning btechgeeks Enter some Random Number = 10 The above Given string with added given number of trailing zeros = good morning btechgeeks0000000000

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