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  1. import java.lang.*;
  2. import java.util.*;
  3.  
  4. class TestIndexOf {
  5. 	String[] arr;
  6. 	TestIndexOf(String[] arr) {
  7. 		this.arr = arr;
  8. 	}
  9.  
  10. 	public int indexOf(String s) {        
  11.     	for(int i = 0; i <= arr.length-1; i++) {
  12.         	if(arr[i].equals(s)) {
  13.             	return i;
  14.         	} 
  15.     	}        
  16.     	return -1;
  17. 	}
  18.  
  19. 	public static void main(String[] args) {
  20. 		String[] arr = new String[20];
  21. 		for(int i = 0; i < arr.length; i++) {
  22. 			arr[i] = "str" + i;
  23. 		}
  24. 		TestIndexOf test = new TestIndexOf(arr);
  25.  
  26. 		Scanner in = new Scanner(System.in);
  27. 		while(in.hasNextLine()) {
  28. 			String next = in.nextLine();
  29. 			System.out.println(next + ": " + test.indexOf(next));
  30. 		}
  31. 	}
  32. }
Success #stdin #stdout 0.09s 380672KB
comments (?)
stdin
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str0
str19
not found
stdout
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str0: 0
str19: 19
not found: -1
https://ideone.com/8JOXyu
language:
Java (12.0.1)
created:
10 years ago
visibility:
public

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