diff --git a/万维调考试题源码/5-1.c b/万维调考试题源码/5-1.c
index 7423d48..ad9faae 100644
--- a/万维调考试题源码/5-1.c
+++ b/万维调考试题源码/5-1.c
@@ -33,7 +33,19 @@ void removeDuplicates(char *str)
     if (len <= 1)
         return;
     /**********Program**********/
-    
+	for(i=0;i<len-1;i++){
+		for(writeIdx=i+1;writeIdx<len;writeIdx++){
+			if(str[i] == str[writeIdx]){
+				seen[writeIdx] = 1;
+			}
+		}
+	}
+	writeIdx = 0;
+	for(i=0;i<len;i++){
+		if(seen[i]==0){
+			str[writeIdx++] = str[i];
+		} 
+	}
     /********** End **********/
     str[writeIdx] = '\0';
 }
diff --git a/万维调考试题源码/5-2.c b/万维调考试题源码/5-2.c
index b3142b2..802ba90 100644
--- a/万维调考试题源码/5-2.c
+++ b/万维调考试题源码/5-2.c
@@ -22,7 +22,17 @@ void decimalToBinary(int decimal)
         return;
     }
     /**********Program**********/
-    
+    for(i=0;decimal>0;i++,decimal/=2){
+    	binary[i] = decimal%2+48;
+	}
+	binary[i] = '\0';
+	i--;
+	for(;i>len;i--){
+		remainder = binary[len];
+		binary[len] = binary[i];
+		binary[i] = remainder;
+		len++;
+	}
     /********** End **********/
     printf("%s\n", binary);
 }
diff --git a/万维调考试题源码/6-1.c b/万维调考试题源码/6-1.c
index 6080637..76e1c6f 100644
--- a/万维调考试题源码/6-1.c
+++ b/万维调考试题源码/6-1.c
@@ -17,7 +17,12 @@ int countPeaches(int lastDay)
     int peaches = 1;
     int day;
     /**********Program**********/
-    
+   day = lastDay;
+   while(day>1){
+	peaches = (peaches+1)*2;
+	day--;
+   } 
+   return peaches;
     /********** End **********/
 }
 int main()