1. You are given a string str. 2. You are required to calculate and print the count of subsequences of the nature a+b+c+. For abbc -> there are 3 subsequences. abc, abc, abbc For abcabc -> there are 7 subsequences. abc, abc, abbc, aabc, abcc, abc, abc. Input Format A string str Output Format count of subsequences of the nature a+b+c+ Constraints 0 < str.length <= 10 Sample Input abcabc Sample Output 7 Solution: import java.io.*; import java.util.*; public class Main { public static void main(String[] args) throws Exception { Scanner sc = new Scanner(System.in); String str = sc.nextLine(); int counta = 0, countb = 0, countc = 0; for(int i=0;i<str.length();i++){ char ch = str.charAt(i); if(ch == 'a') ++coun...
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