gfg_string_question

https://www.geeksforgeeks.org/top-50-string-coding-problems-for-interviews/

Importance

playing with characters test logic of programmer very well
understanding of C++ Standard Template Library(STL) also increase
frequently asked string coding questions in every coding round

Key Points

ascii value:-

48 to 57 - Number
65 to 90 - uppercase [(s[0]>='a'&&s[0]<='z']
97 to 122 - lowercase [(s[0]>='A'&&s[0]<='Z']
lowercase = lowercase + 32

inbuilt Method:-

toupper:- (char)tolower(s[i]);
tolower:- (char)toupper(s[i]);

Transform:-

transform(s.begin(), s.end(), s.begin(), ::tolower);
transform(s.begin(), s.end(), s.begin(), ::toupper);
Find:- s1.find(s2[i])!=string::npos:- it means <find s2[i] in s1> is present
token:- stringstream ex:
string s = "geeks for geeks"; stringstream ss(s); // Used for breaking words
string word; // to store individual words
while (ss >> word)
cout << word << endl;
next_permutation()

Name		Name	Last commit message	Last commit date
Latest commit History 22 Commits
.vscode		.vscode
Add_minimum-Char_palindrome.cpp		Add_minimum-Char_palindrome.cpp
Binary_String.cpp		Binary_String.cpp
Change_The_String.cpp		Change_The_String.cpp
Count_Number_of_consistent_string.cpp		Count_Number_of_consistent_string.cpp
Decode_The_Message.cpp		Decode_The_Message.cpp
Group_anagram.cpp		Group_anagram.cpp
Integer_To_Roman.cpp		Integer_To_Roman.cpp
Keypad_Typing.cpp		Keypad_Typing.cpp
Longest_Balance_Binary_String.cpp		Longest_Balance_Binary_String.cpp
Longest_Substring_without_repeting_char.cpp		Longest_Substring_without_repeting_char.cpp
Longest_common_prefix.cpp		Longest_common_prefix.cpp
Maximum_Length.cpp		Maximum_Length.cpp
Merge_Two_string_charbyChar.cpp		Merge_Two_string_charbyChar.cpp
Palindrome_String.cpp		Palindrome_String.cpp
Permutation_in_string.cpp		Permutation_in_string.cpp
README.md		README.md
Red_OR_Green.cpp		Red_OR_Green.cpp
Remove_Character.cpp		Remove_Character.cpp
Remove_Consonants_from_string.cpp		Remove_Consonants_from_string.cpp
Remove_Palindrome_Subsequences.cpp		Remove_Palindrome_Subsequences.cpp
Remove_Stars_From_String.cpp		Remove_Stars_From_String.cpp
Repeated_DNA_Sequences.cpp		Repeated_DNA_Sequences.cpp
Reverse_Word_in_String.cpp		Reverse_Word_in_String.cpp
Roman_To_Integer.cpp		Roman_To_Integer.cpp
Shuffle_string.cpp		Shuffle_string.cpp
StrStr.cpp		StrStr.cpp
anagram_make.cpp		anagram_make.cpp
anagram_occurence.cpp		anagram_occurence.cpp
anagram_string_or_not.cpp		anagram_string_or_not.cpp
array_subset_of_another_sum.cpp		array_subset_of_another_sum.cpp
check_all_char_have_same_occurence_or_not.cpp		check_all_char_have_same_occurence_or_not.cpp
check_for_SUBSEQUENCE.cpp		check_for_SUBSEQUENCE.cpp
check_string_rotated_eachother_or_not		check_string_rotated_eachother_or_not
check_string_rotated_eachother_or_not.cpp		check_string_rotated_eachother_or_not.cpp
convert_to_lowercase.cpp		convert_to_lowercase.cpp
delete_column.cpp		delete_column.cpp
detect_capital.cpp		detect_capital.cpp
display_longest_name.cpp		display_longest_name.cpp
equilibrium_point.cpp		equilibrium_point.cpp
extract_maximum_number_from_string.cpp		extract_maximum_number_from_string.cpp
find_divisibility_array_of_string.cpp		find_divisibility_array_of_string.cpp
find_occurence_of_s2_in_s1.cpp		find_occurence_of_s2_in_s1.cpp
first-unique-character-in-string.cpp		first-unique-character-in-string.cpp
isogram_string.cpp		isogram_string.cpp
length_of_last_word.cpp		length_of_last_word.cpp
longest_1_count_in_string.cpp		longest_1_count_in_string.cpp
longest_palindromecpp		longest_palindromecpp
maximum_occuring_char.cpp		maximum_occuring_char.cpp
panagram_checking.cpp		panagram_checking.cpp
paranthesis_Checker.cpp		paranthesis_Checker.cpp
permutation_of_string.cpp		permutation_of_string.cpp
power_set_(all subsequence).cpp		power_set_(all subsequence).cpp
print_1st_letter_of_every_word.cpp		print_1st_letter_of_every_word.cpp
remove_common_character_and_concatenate.cpp		remove_common_character_and_concatenate.cpp
remove_consecutive_char.cpp		remove_consecutive_char.cpp
repeated_char.cpp		repeated_char.cpp
reverse_string		reverse_string
reverse_string.cpp		reverse_string.cpp
reversing_the_vowel.cpp		reversing_the_vowel.cpp
simplify-path.cpp		simplify-path.cpp
sort_the_people.cpp		sort_the_people.cpp
sum_of_number_in_string.cpp		sum_of_number_in_string.cpp
uncommen_character.cpp		uncommen_character.cpp
valid_palindrome.cpp		valid_palindrome.cpp

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gfg_string_question

Importance

Key Points

ascii value:-

inbuilt Method:-

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