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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10.  
  11.     public static int strFindAndCount(String gdzie, String co)
  12.     {
  13.         int licznikWystapien = 0;
  14.         String[] tablicaSlow = new String[200];
  15.         tablicaSlow = gdzie.split("\\s+");
  16.  
  17.         for (int i = 0 ; i < tablicaSlow.length;i++)
  18.         {
  19.  
  20.             if(tablicaSlow[i].contains(co))
  21.             {
  22.                 licznikWystapien++;                         
  23.             }
  24.  
  25.         }
  26.         return licznikWystapien;
  27.     }
  28.  
  29.     public static int strFindAndCount2(String gdzie, String co)
  30.     {
  31.     	if (co.length() <= 0 || gdzie.length() < co.length()) {
  32.     		return 0;
  33.     	}
  34.  
  35.         int licznikWystapien = 0;
  36.         int idx = 0;
  37.  
  38.         while(idx >= 0 && (idx + co.length() <= gdzie.length())) {
  39.         	idx = gdzie.indexOf(co, idx);
  40.         	if (idx >= 0) {
  41.         		licznikWystapien++;
  42.         		idx++;
  43.         	} 
  44.         }
  45.         return licznikWystapien;
  46.     }
  47.  
  48.     static int strFindAndCount3(String s, String p) {
  49.         int cnt = 0;
  50.         for (int i = 0; i < s.length() - p.length() + 1; ++i) {
  51.             if (s.subSequence(i, i + p.length()).equals(p))
  52.                 ++cnt;
  53.         }
  54.         return cnt;
  55.     }
  56.  
  57.     private static void test(int testId, int methodId, String text, String pattern, int expected) {
  58.       int result;
  59.  
  60.       if (methodId == 1) {
  61.       	result = strFindAndCount(text, pattern);
  62.       } else if (methodId == 2) {
  63.       	result = strFindAndCount2(text, pattern);
  64.       }	else {
  65.       	result = strFindAndCount3(text, pattern);
  66.       }
  67.  
  68.       if (result == expected) {
  69.       	System.out.printf("Test %d, method %d: OK%n", testId, methodId);
  70.       } else {
  71.       	System.out.printf("Test %d, method %d: failed, expected: %d, result: %d%n", testId, methodId, expected, result);
  72.       }
  73.     }
  74.  
  75.     private static void test(int testId, String text, String pattern, int expected) {
  76.     	test(testId, 1, text, pattern, expected);
  77.     	test(testId, 2, text, pattern, expected);
  78.     	test(testId, 3, text, pattern, expected);
  79.     }
  80.  
  81. 	public static void main (String[] args) throws java.lang.Exception
  82. 	{
  83. 		test(1, "mama ma kota", "ma", 3);
  84. 		test(2, "mama ma kota", "", 0);
  85. 		test(3, "", "", 0);
  86. 		test(4, "mama", "mama", 1);
  87. 		test(5, "ma", "mama", 0);
  88. 		test(6, "mama", "m", 2);
  89. 		test(7, "mama, mamma mia", "ma", 4);
  90. 		test(8, "maaa, mia", "aa", 2);
  91.    }
  92. }
Success #stdin #stdout 0.13s 34384KB
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stdin
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Standard input is empty
stdout
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Test 1, method 1: failed, expected: 3, result: 2
Test 1, method 2: OK
Test 1, method 3: OK
Test 2, method 1: failed, expected: 0, result: 3
Test 2, method 2: OK
Test 2, method 3: failed, expected: 0, result: 13
Test 3, method 1: failed, expected: 0, result: 1
Test 3, method 2: OK
Test 3, method 3: failed, expected: 0, result: 1
Test 4, method 1: OK
Test 4, method 2: OK
Test 4, method 3: OK
Test 5, method 1: OK
Test 5, method 2: OK
Test 5, method 3: OK
Test 6, method 1: failed, expected: 2, result: 1
Test 6, method 2: OK
Test 6, method 3: OK
Test 7, method 1: failed, expected: 4, result: 2
Test 7, method 2: OK
Test 7, method 3: OK
Test 8, method 1: failed, expected: 2, result: 1
Test 8, method 2: OK
Test 8, method 3: OK
https://ideone.com/CnXHEa
language:
Java (12.0.1)
created:
4 years ago
visibility:
public

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