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  1. import java.util.*;
  2. import java.io.*;
  3. public class Main
  4. {
  5. 	public static void main(String[] args) {
  6. 		Scanner sc = new Scanner(System.in);
  7.  
  8. 		String a =sc.nextLine();
  9. 		String b =sc.nextLine();
  10. 		int n1 =a.length();
  11. 		int n2 =b.length();
  12. 		int n=n1;
  13.  
  14. 		boolean res0=true;
  15. 		if(n1!=n2){
  16. 		    res0=false;
  17. 		}
  18.  
  19. 		HashMap<Character,Integer>m1 = new HashMap<>();
  20. 		HashMap<Character,Integer>m2 = new HashMap<>();
  21. 		HashMap<Character,Integer>m3 = new HashMap<>();
  22. 		HashMap<Character,Integer>m4 = new HashMap<>();
  23.  
  24. 		for(int i=0;i<n;i++){
  25. 		    if(i%2 ==0){ //even indices
  26. 		        m1.put(a.charAt(i),m1.getOrDefault(a.charAt(i),0)+1);
  27. 		        m3.put(b.charAt(i),m3.getOrDefault(b.charAt(i),0)+1);
  28. 		    }
  29. 		    else if((i%2)!=0){
  30. 		        m2.put(a.charAt(i),m2.getOrDefault(a.charAt(i),0)+1);
  31. 		        m4.put(b.charAt(i),m4.getOrDefault(b.charAt(i),0)+1);
  32. 		    }
  33. 		}
  34.  
  35. 		boolean f1= false;
  36. 		boolean f2= false;
  37. 		boolean res1 =false;
  38. 		int flag1=0;
  39. // 		if(m1.equals(m3)){
  40. // 		    res1=true;
  41. // 		}
  42. 		if(m1.size() != m3.size()){
  43. 		    res1=false;
  44. 		}
  45. 		else if(m1.isEmpty() && m3.isEmpty()){
  46. 		    res1=true;
  47. 		}
  48. 		else{
  49. 		      for(Map.Entry<Character,Integer>i :m1.entrySet()){
  50. 		    Character k =i.getKey();
  51. 		    int v =i.getValue();
  52. 		    f1=false;
  53. 		    f2=false;
  54.  
  55. 		    if(m3.containsKey(k)){
  56. 		        f1=true;
  57. 		        int val =m3.get(k);
  58.  
  59. 		        if(val == v){
  60. 		            f2= true;
  61. 		        }
  62. 		    }
  63. 		    if(f1==false || f2 ==false){
  64. 		        res1=false;
  65. 		        flag1=1;
  66. 		        break;
  67. 		    }
  68. 		}
  69. 		if(flag1==0){
  70. 	       res1=true;
  71. 		}
  72. 		}
  73.  
  74.  
  75.  
  76. 		boolean f3= false;
  77. 		boolean f4= false;
  78. 		boolean res2 =false;
  79. 		int flag2=0;
  80. // 		if(m2.equals(m4)){
  81. // 		    res2=true;
  82. // 		}
  83. 		if(m2.size() != m4.size()){
  84. 		    res2=false;
  85. 		}
  86. 		else if(m2.isEmpty() && m4.isEmpty()){
  87. 		    res2=true;
  88. 		}
  89. 		else{
  90. 		    for(Map.Entry<Character,Integer>i :m2.entrySet()){
  91. 		    Character k =i.getKey();
  92. 		    int v =i.getValue();
  93. 		    f3=false;
  94. 		    f4=false;
  95. 		    if(m4.containsKey(k)){
  96. 		        f3=true;
  97. 		        int val =m4.get(k);
  98.  
  99. 		        if(val == v){
  100. 		            f4= true;
  101. 		        }
  102. 		    }
  103. 		    if(f3==false || f4==false){
  104. 		        res2=false;
  105. 		        flag2=1;
  106. 		        break;
  107. 		    }
  108. 		}
  109. 		if(flag2 == 0){
  110. 		    res2=true;
  111. 		}
  112.  
  113. 		}
  114.  
  115.  
  116. 		if(res1 ==true && res2 ==true && res0 == true){
  117. 		    System.out.print("Strings are equal when operation done");
  118. 		}
  119. 		else{
  120. 		    System.out.print("Strings are not equal even when operation done");
  121. 		}
  122.  
  123.  
  124. 	}
  125. }
Runtime error #stdin #stdout #stderr 0.13s 56648KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
stderr 
Exception in thread "main" java.util.NoSuchElementException: No line found
	at java.base/java.util.Scanner.nextLine(Scanner.java:1651)
	at Main.main(Main.java:8)
https://ideone.com/UelbnD
language:
Java (HotSpot 12)
created:
2 days ago
visibility:
public

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