Sure, here is a Python solution for the problem:

```python
def remove_chars(str1, str2):
# Create a hash table to store characters of str2
hash_table = set(str2)

# Iterate over str1 and only keep characters not in hash_table
str1 = [char for char in str1 if char not in hash_table]

# Join the characters back into a string and return
return ''.join(str1)

# Test the function
str1 = "hello"
str2 = "world"
print(remove_chars(str1, str2)) # Output: "he"
```

This program works by first creating a set (hash table) of all the characters in the second string. It then iterates over the first string and only keeps the characters that are not in the hash table. Finally, it joins the remaining characters back into a string and returns the result.

Question

Sure, here is a Python solution for the problem:

```python
def remove_chars(str1, str2):
    # Create a hash table to store characters of str2
    hash_table = set(str2)
    
    # Iterate over str1 and only keep characters not in hash_table
    str1 = [char for char in str1 if char not in hash_table]
    
    # Join the characters back into a string and return
    return ''.join(str1)

# Test the function
str1 = "hello"
str2 = "world"
print(remove_chars(str1, str2))  # Output: "he"
```

This program works by first creating a set (hash table) of all the characters in the second string. It then iterates over the first string and only keeps the characters that are not in the hash table. Finally, it joins the remaining characters back into a string and returns the result.

Knowee AI · Accepted Answer

Sure, here is a Python solution for the problem:

```python
def remove_chars(str1, str2):
    # Create a hash table to store characters of str2
    hash_table = set(str2)
    
    # Iterate over str1 and only keep characters not in hash_table
    str1 = [char for char in str1 if char not in hash_table]
    
    # Join the characters back into a string and return
    return ''.join(str1)

# Test the function
str1 = "hello"
str2 = "world"
print(remove_chars(str1, str2))  # Output: "he"
```

This program works by first creating a set (hash table) of all the characters in the second string. It then iterates over the first string and only keeps the characters that are not in the hash table. Finally, it joins the remaining characters back into a string and returns the result.

Problem StatementWrite a program to remove the characters from the first string which are present in the second stringInput FormatGiven two stringsOutput FormatPrint the updated first string

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