Below is the syntax highlighted version of Subsequence.java
from §5 Strings.
/****************************************************************************** * Compilation: javac Subsequence.java * Execution: java Subsequence s t * Dependencies: StdOut.java * * Determines whether string s is a subsequence of string t. * * ******************************************************************************/ public class Subsequence { // is the string s a subsequence of the string t? public static boolean isSubsequence(String s, String t) { int m = s.length(); int n = t.length(); if (m == 0) return true; int i = 0; for (int j = 0; j < n; j++) { if (s.charAt(i) == t.charAt(j)) i++; if (i == m) return true; } return false; } public static void main(String[] args) { String s = args[0]; String t = args[1]; StdOut.println(isSubsequence(s, t)); } }