Data commit

Task/Determine-if-a-string-is-squeezable/C/determine-if-a-string-is-squeezable.c

@@ -0,0 +1,170 @@
+#include<string.h>
+#include<stdlib.h>
+#include<stdio.h>
+
+#define COLLAPSE 0
+#define SQUEEZE 1
+
+typedef struct charList{
+    char c;
+    struct charList *next;
+} charList;
+
+/*
+Implementing strcmpi, the case insensitive string comparator, as it is not part of the C Standard Library.
+
+Comment this out if testing on a compiler where it is already defined.
+*/
+
+int strcmpi(char str1[100],char str2[100]){
+    int len1 = strlen(str1), len2 = strlen(str2), i;
+
+    if(len1!=len2){
+        return 1;
+    }
+
+    else{
+        for(i=0;i<len1;i++){
+            if((str1[i]>='A'&&str1[i]<='Z')&&(str2[i]>='a'&&str2[i]<='z')&&(str2[i]-65!=str1[i]))
+                return 1;
+            else if((str2[i]>='A'&&str2[i]<='Z')&&(str1[i]>='a'&&str1[i]<='z')&&(str1[i]-65!=str2[i]))
+                return 1;
+            else if(str1[i]!=str2[i])
+                return 1;
+        }
+    }
+
+    return 0;
+}
+
+charList *strToCharList(char* str){
+    int len = strlen(str),i;
+
+    charList *list, *iterator, *nextChar;
+
+    list = (charList*)malloc(sizeof(charList));
+    list->c = str[0];
+    list->next = NULL;
+
+    iterator = list;
+
+    for(i=1;i<len;i++){
+        nextChar = (charList*)malloc(sizeof(charList));
+        nextChar->c = str[i];
+        nextChar->next = NULL;
+
+        iterator->next = nextChar;
+        iterator = nextChar;
+    }
+
+    return list;
+}
+
+char* charListToString(charList* list){
+    charList* iterator = list;
+    int count = 0,i;
+    char* str;
+
+    while(iterator!=NULL){
+        count++;
+        iterator = iterator->next;
+    }
+
+    str = (char*)malloc((count+1)*sizeof(char));
+    iterator = list;
+
+    for(i=0;i<count;i++){
+        str[i] = iterator->c;
+        iterator = iterator->next;
+    }
+
+    free(list);
+    str[i] = '\0';
+
+    return str;
+}
+
+char* processString(char str[100],int operation, char squeezeChar){
+    charList *strList = strToCharList(str),*iterator = strList, *scout;
+
+    if(operation==SQUEEZE){
+        while(iterator!=NULL){
+            if(iterator->c==squeezeChar){
+                scout = iterator->next;
+
+                while(scout!=NULL && scout->c==squeezeChar){
+                        iterator->next = scout->next;
+                        scout->next = NULL;
+                        free(scout);
+                        scout = iterator->next;
+                }
+            }
+            iterator = iterator->next;
+        }
+    }
+
+    else{
+        while(iterator!=NULL && iterator->next!=NULL){
+            if(iterator->c == (iterator->next)->c){
+                scout = iterator->next;
+                squeezeChar = iterator->c;
+
+                while(scout!=NULL && scout->c==squeezeChar){
+                        iterator->next = scout->next;
+                        scout->next = NULL;
+                        free(scout);
+                        scout = iterator->next;
+                }
+            }
+            iterator = iterator->next;
+        }
+    }
+
+    return charListToString(strList);
+}
+
+void printResults(char originalString[100], char finalString[100], int operation, char squeezeChar){
+    if(operation==SQUEEZE){
+        printf("Specified Operation : SQUEEZE\nTarget Character : %c",squeezeChar);
+    }
+
+    else
+        printf("Specified Operation : COLLAPSE");
+
+    printf("\nOriginal %c%c%c%s%c%c%c\nLength : %d",174,174,174,originalString,175,175,175,(int)strlen(originalString));
+    printf("\nFinal    %c%c%c%s%c%c%c\nLength : %d\n",174,174,174,finalString,175,175,175,(int)strlen(finalString));
+}
+
+int main(int argc, char** argv){
+    int operation;
+    char squeezeChar;
+
+    if(argc<3||argc>4){
+        printf("Usage : %s <SQUEEZE|COLLAPSE> <String to be processed> <Character to be squeezed, if operation is SQUEEZE>\n",argv[0]);
+        return 0;
+    }
+
+    if(strcmpi(argv[1],"SQUEEZE")==0 && argc!=4){
+        scanf("Please enter characted to be squeezed : %c",&squeezeChar);
+        operation = SQUEEZE;
+    }
+
+    else if(argc==4){
+        operation = SQUEEZE;
+        squeezeChar = argv[3][0];
+    }
+
+    else if(strcmpi(argv[1],"COLLAPSE")==0){
+        operation = COLLAPSE;
+    }
+
+    if(strlen(argv[2])<2){
+        printResults(argv[2],argv[2],operation,squeezeChar);
+    }
+
+    else{
+        printResults(argv[2],processString(argv[2],operation,squeezeChar),operation,squeezeChar);
+    }
+
+    return 0;
+}