Python Program to Add Trailing Zeros to String

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.

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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