ReverseArrayWithoutAffectingSpecialChars

Author: jbhattac

ReverseArrayWithoutAffectingSpecialChars.java

@@ -0,0 +1,40 @@
+package ds.algo.solutions;
+
+public class ReverseArrayWithoutAffectingSpecialChars {
+
+	public static void main(String[] args) {
+		String str = "Ab,c,de!$";
+		char[] arr = str.toCharArray();
+		
+		int start = 0;
+		int end = arr.length - 1;
+		char temp;
+		
+		System.out.println("Before");
+		System.out.println(arr);
+		
+		while (start < end) {
+			if (isAlphabet(arr[start]) && isAlphabet(arr[end])) {
+				temp = arr[start];
+				arr[start] = arr[end];
+				arr[end] = temp;
+				start++; end--;
+				continue;
+			}
+			if (!isAlphabet(arr[start])) {
+				start++;
+			}
+			if (!isAlphabet(arr[end])) {
+				end--;
+			}
+		}
+		
+		
+		System.out.println("After");
+		System.out.println(arr);
+	}
+	
+	private static boolean isAlphabet(char ch) {
+		return ch >= 65 && ch <= 90 || ch >= 97 && ch <= 122; 
+	}
+}