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docs: update the whole repository
* fix some bugs * delete duplicate files * format code
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@ -1,14 +1,17 @@
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/*
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Implementation of Knuth–Morris–Pratt algorithm
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Usage: see the main function for an example
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*/
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package Others;
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/**
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* Implementation of Knuth–Morris–Pratt algorithm
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* Usage: see the main function for an example
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*/
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public class KMP {
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//a working example
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public static void main(String[] args) {
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final String haystack = "AAAAABAAABA"; //This is the full string
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final String needle = "AAAA"; //This is the substring that we want to find
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KMPmatcher(haystack, needle);
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}
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public static void main(String[] args) {
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final String haystack = "AAAAABAAABA"; //This is the full string
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final String needle = "AAAA"; //This is the substring that we want to find
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KMPmatcher(haystack, needle);
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}
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// find the starting index in string haystack[] that matches the search word P[]
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public static void KMPmatcher(final String haystack, final String needle) {
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final int m = haystack.length();
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@ -17,7 +20,7 @@ public class KMP {
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int q = 0;
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for (int i = 0; i < m; i++) {
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while (q > 0 && haystack.charAt(i) != needle.charAt(q)) {
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q = pi[q - 1];
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q = pi[q - 1];
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}
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if (haystack.charAt(i) == needle.charAt(q)) {
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@ -26,11 +29,12 @@ public class KMP {
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if (q == n) {
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System.out.println("Pattern starts: " + (i + 1 - n));
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q = pi[q - 1];
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q = pi[q - 1];
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}
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}
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}
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// return the prefix function
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// return the prefix function
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private static int[] computePrefixFunction(final String P) {
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final int n = P.length();
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final int[] pi = new int[n];
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