June 2018 Update

Task/Ranking-methods/C/ranking-methods.c

@@ -0,0 +1,119 @@
+/*Abhishek Ghosh, 5th November 2017*/
+
+#include<stdlib.h>
+#include<stdio.h>
+
+typedef struct{
+	int score;
+	char name[100];
+}entry;
+
+void ordinalRanking(entry* list,int len){
+	
+	int i;
+	
+	printf("\n\nOrdinal Ranking\n---------------");
+	
+	for(i=0;i<len;i++)
+		printf("\n%d\t%d\t%s",i+1,list[i].score,list[i].name);
+}
+
+void standardRanking(entry* list,int len){
+	
+	int i,j=1;
+	
+	printf("\n\nStandard Ranking\n----------------");
+	
+	for(i=0;i<len;i++){
+		printf("\n%d\t%d\t%s",j,list[i].score,list[i].name);
+		if(list[i+1].score<list[i].score)
+			j = i+2;
+	}
+}
+
+void denseRanking(entry* list,int len){
+	
+	int i,j=1;
+	
+	printf("\n\nDense Ranking\n-------------");
+	
+	for(i=0;i<len;i++){
+		printf("\n%d\t%d\t%s",j,list[i].score,list[i].name);
+		if(list[i+1].score<list[i].score)
+			j++;
+	}
+}
+
+void modifiedRanking(entry* list,int len){
+	
+	int i,j,count;
+	
+	printf("\n\nModified Ranking\n----------------");
+	
+	for(i=0;i<len-1;i++){
+		if(list[i].score!=list[i+1].score){
+			printf("\n%d\t%d\t%s",i+1,list[i].score,list[i].name);
+			count = 1;
+			for(j=i+1;list[j].score==list[j+1].score && j<len-1;j++)
+				count ++;
+			for(j=0;j<count-1;j++)
+				printf("\n%d\t%d\t%s",i+count+1,list[i+j+1].score,list[i+j+1].name);
+			i += (count-1);
+		}
+	}
+	printf("\n%d\t%d\t%s",len,list[len-1].score,list[len-1].name);
+}
+
+void fractionalRanking(entry* list,int len){
+	
+	int i,j,count;
+	float sum = 0;
+	
+	printf("\n\nFractional Ranking\n------------------");
+	
+	for(i=0;i<len;i++){
+		if(i==len-1 || list[i].score!=list[i+1].score)
+			printf("\n%.1f\t%d\t%s",(float)(i+1),list[i].score,list[i].name);
+		else if(list[i].score==list[i+1].score){
+			sum = i;
+			count = 1;
+			for(j=i;list[j].score==list[j+1].score;j++){
+				sum += (j+1);
+				count ++;
+			}
+			for(j=0;j<count;j++)
+				printf("\n%.1f\t%d\t%s",sum/count + 1,list[i+j].score,list[i+j].name);
+			i += (count-1);
+		}
+	}
+}
+
+void processFile(char* fileName){
+	FILE* fp = fopen(fileName,"r");
+	entry* list;
+	int i,num;
+	
+	fscanf(fp,"%d",&num);
+	
+	list = (entry*)malloc(num*sizeof(entry));
+	
+	for(i=0;i<num;i++)
+		fscanf(fp,"%d%s",&list[i].score,list[i].name);
+	
+	fclose(fp);
+	
+	ordinalRanking(list,num);
+	standardRanking(list,num);
+	denseRanking(list,num);
+	modifiedRanking(list,num);
+	fractionalRanking(list,num);
+}
+
+int main(int argC,char* argV[])
+{
+	if(argC!=2)
+		printf("Usage %s <score list file>");
+	else
+		processFile(argV[1]);
+	return 0;
+}