Merge pull request #71 from skcshubham/patch-1

checkAnagram.c

Author: gouravthakur39

Anagram-Program-in-C

@@ -0,0 +1,71 @@
+#include <stdio.h>  
+#include <string.h> 
+#include <stdlib.h>  
+
+int checkAnagram(char *str1, char *str2);
+
+int main()
+{
+    char str1[100], str2[100];
+    
+    printf("Function : whether two given strings are anagram :");
+    printf("\nExample : pears and  spare, stone and tones :");
+    
+    printf(" Input the  first String : ");
+    fgets(str1, sizeof str1, stdin);
+    printf(" Input the  second String : ");
+    fgets(str2, sizeof str2, stdin);
+ 
+    if(checkAnagram(str1, str2) == 1)
+    {
+       str1[strlen(str1)-1] = '\0';
+       str2[strlen(str2)-1] = '\0';
+       printf(" %s and %s are Anagram.\n\n",str1,str2);
+    } 
+    else 
+    {
+       str1[strlen(str1)-1] = '\0';
+       str2[strlen(str2)-1] = '\0';
+       printf(" %s and %s are not Anagram.\n\n",str1,str2);
+    }
+    return 0;
+}
+ 
+    
+//Function to check whether two passed strings are anagram or not
+
+int checkAnagram(char *str1, char *str2)
+{
+    int str1ChrCtr[256] = {0}, str2ChrCtr[256] = {0};
+    int ctr;
+    
+    /* check the length of equality of Two Strings */
+    
+    if(strlen(str1) != strlen(str2))
+    {
+        return 0;
+    }
+    
+    //count frequency of characters in str1 
+    
+    for(ctr = 0; str1[ctr] != '\0'; ctr++)
+    {
+        str1ChrCtr[str1[ctr]]++;
+    }
+    
+    //count frequency of characters in str2 
+    
+    for(ctr = 0; str2[ctr] != '\0'; ctr++)
+    {
+        str2ChrCtr[str2[ctr]]++;
+    }
+    
+    //compare character counts of both strings 
+    
+    for(ctr = 0; ctr < 256; ctr++)
+    {
+        if(str1ChrCtr[ctr] != str2ChrCtr[ctr])
+            return 0;
+    }
+    return 1;
+}