Group consecutive characters of same type in a string
Given a string str consisting of upper case alphabets, numeric digits and arithmetic operators, the task is to group them into continuous sub-strings of same type.
Examples:
Input: str = “G E E K S 1 2 3 4 5”
Output: GEEKS 12345
All contiguous upper case characters can be grouped together
and all the numeric characters can be grouped together in a separate group.Input: str = “DEGFT +- * 5 6 7”
Output: DEGFT +-* 567
Approach: Remove all the spaces from string. After removing all the white spaces, traverse the string one by one and group the characters according to their ASCII values.
Below is the implementation of the above approach:
C++
// C++ implementation of the approach #include <bits/stdc++.h> using namespace std; // Function to return the modified string string groupCharacters(string s, int len) { // Store original string string temp = ""; // Remove all white spaces for (int i = 0; i < len; i++) if (s[i] != ' ') temp = temp + s[i]; len = temp.length(); // To store the resultant string string ans = ""; int i = 0; // Traverse the string while (i < len) { // Group upper case characters if (int(temp[i]) >= int('A') && int(temp[i]) <= int('Z')) { while (i < len && int(temp[i]) >= int('A') && int(temp[i]) <= int('Z')) { ans = ans + temp[i]; i++; } ans = ans + " "; } // Group numeric characters else if (int(temp[i]) >= int('0') && int(temp[i]) <= int('9')) { while (i < len && int(temp[i]) >= int('0') && int(temp[i]) <= int('9')) { ans = ans + temp[i]; i++; } ans = ans + " "; } // Group arithmetic operators else { while (i < len && int(temp[i]) >= int('*') && int(temp[i]) <= int('/')) { ans = ans + temp[i]; i++; } ans = ans + " "; } } // Return the resultant string return ans; } // Driver code int main() { string s = "34FTG234+ +- *"; int len = s.length(); cout << groupCharacters(s, len); return 0; } |
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Java
// Java implementation of the approach class GFG { // Function to return the modified String static String groupCharacters(char []s, int len) { // Store original String String temp = ""; // Remove all white spaces for (int i = 0; i < len; i++) if (s[i] != ' ') temp = temp + s[i]; len = temp.length(); // To store the resultant String String ans = ""; int i = 0; // Traverse the String while (i < len) { // Group upper case characters if (temp.charAt(i) >= ('A') && temp.charAt(i) <= ('Z')) { while (i < len && temp.charAt(i) >= ('A') && temp.charAt(i) <= ('Z')) { ans = ans + temp.charAt(i); i++; } ans = ans + " "; } // Group numeric characters else if (temp.charAt(i) >= ('0') && temp.charAt(i) <= ('9')) { while (i < len && temp.charAt(i) >= ('0') && temp.charAt(i) <= ('9')) { ans = ans + temp.charAt(i); i++; } ans = ans + " "; } // Group arithmetic operators else { while (i < len && temp.charAt(i) >= ('*') && temp.charAt(i) <= ('/')) { ans = ans + temp.charAt(i); i++; } ans = ans + " "; } } // Return the resultant String return ans; } // Driver code public static void main(String[] args) { String s = "34FTG234+ +- *"; int len = s.length(); System.out.print(groupCharacters(s.toCharArray(), len)); } } // This code contributed by Rajput-Ji |
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Python 3
# Python 3 implementation of the approach # Function to return the modified string def groupCharacters(s, l): # Store original string temp = "" # Remove all white spaces for i in range(l): if (s[i] != ' '): temp = temp + s[i] l = len(temp) # To store the resultant string ans = "" i = 0 # Traverse the string while (i < l): # Group upper case characters if (ord(temp[i]) >= ord('A') and ord(temp[i]) <= ord('Z')): while (i < l and ord(temp[i]) >= ord('A') and ord(temp[i]) <= ord('Z')) : ans = ans + temp[i] i += 1 ans = ans + " " # Group numeric characters elif (ord(temp[i]) >= ord('0') and ord(temp[i]) <= ord('9')): while (i < l and ord(temp[i]) >= ord('0') and ord(temp[i]) <= ord('9')): ans = ans + temp[i] i += 1 ans = ans + " " # Group arithmetic operators else : while (i < l and ord(temp[i]) >= ord('*') and ord(temp[i]) <= ord('/')): ans = ans + temp[i] i += 1 ans = ans + " " # Return the resultant string return ans # Driver code if __name__ == "__main__": s = "34FTG234+ +- *" l = len(s) print(groupCharacters(s, l)) # This code is contributed by Ita_c |
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C#
// C# implementation of the approach using System; class GFG { // Function to return the modified String static String groupCharacters(char []s, int len) { // Store original String string temp = ""; // Remove all white spaces for (int j = 0; j < len; j++) if (s[j] != ' ') temp = temp + s[j]; len = temp.Length; // To store the resultant String string ans = ""; int i = 0; // Traverse the String while (i < len) { // Group upper case characters if (temp[i] >= ('A') && temp[i] <= ('Z')) { while (i < len && temp[i] >= ('A') && temp[i] <= ('Z')) { ans = ans + temp[i]; i++; } ans = ans + " "; } // Group numeric characters else if (temp[i] >= ('0') && temp[i] <= ('9')) { while (i < len && temp[i] >= ('0') && temp[i] <= ('9')) { ans = ans + temp[i]; i++; } ans = ans + " "; } // Group arithmetic operators else { while (i < len && temp[i] >= ('*') && temp[i] <= ('/')) { ans = ans + temp[i]; i++; } ans = ans + " "; } } // Return the resultant String return ans; } // Driver code public static void Main() { string s = "34FTG234+ +- *"; int len = s.Length; Console.WriteLine(groupCharacters(s.ToCharArray(), len)); } } // This code contributed by Ryuga |
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PHP
<?php // PHP implementation of the approach // Function to return the modified string function groupCharacters($s, $len) { // Store original string $temp = ""; // Remove all white spaces for ($i = 0; $i < $len; $i++) if ($s[$i] != ' ') $temp = $temp.$s[$i]; $len = strlen($temp); // To store the resultant string $ans = ""; $i = 0; // Traverse the string while ($i < $len) { // Group upper case characters if (ord($temp[$i]) >= ord('A') && ord($temp[$i]) <= ord('Z')) { while ($i < $len && ord($temp[$i]) >= ord('A') && ord($temp[$i]) <= ord('Z')) { $ans = $ans.$temp[$i]; $i++; } $ans = $ans . " "; } // Group numeric characters else if (ord($temp[$i]) >= ord('0') && ord($temp[$i]) <= ord('9')) { while ($i < $len && ord($temp[$i]) >= ord('0') && ord($temp[$i]) <= ord('9')) { $ans = $ans.$temp[$i]; $i++; } $ans = $ans . " "; } // Group arithmetic operators else { while ($i < $len && ord($temp[$i]) >= ord('*') && ord($temp[$i]) <= ord('/')) { $ans = $ans.$temp[$i]; $i++; } $ans = $ans . " "; } } // Return the resultant string return $ans; } // Driver code $s = "34FTG234+ +- *"; $len = strlen($s); print(groupCharacters($s, $len)); // This code is contributed by mits ?> |
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Output:
34 FTG 234 ++-*
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