[Manan] ADD:Finding most frequent character in a string

Author: mananguptamg

MostFrequentCharacter.java

@@ -0,0 +1,42 @@
+import java.util.Scanner;
+
+class MostFrequentCharacter {
+    // Main method
+    public static void main(String[] args) {
+        Scanner input = new Scanner(System.in);
+
+        System.out.print("Enter a string: ");
+        String str = input.nextLine();
+
+        // Method to find the most frequent character in a string
+        char result = mostFrequentChar(str);
+
+        System.out.println("Most frequent character in the string: " + result);
+    }
+
+    // Method to find the most frequent character in a string
+    public static char mostFrequentChar(String str) {
+        // Remove all leading and trailing whitespace, and in between spaces
+        str = str.replaceAll("\\s", "").trim();
+
+        int[] freq = new int[256];
+
+        // Count frequency of each character
+        for (int i = 0; i < str.length(); i++) {
+            char ch = str.charAt(i);
+            freq[ch]++;
+        }
+
+        // Find the character with maximum frequency
+        char mostFrequentChar = '\0';
+        int maxFreq = 0;
+        for (int i = 0; i < freq.length; i++) {
+            if (freq[i] > maxFreq) {
+                maxFreq = freq[i];
+                mostFrequentChar = (char) i;
+            }
+        }
+
+        return mostFrequentChar;
+    }
+}