diff --git a/problem_1/problem_1.java b/problem_1/problem_1.java
index 64edb8f..d94dbbd 100644
--- a/problem_1/problem_1.java
+++ b/problem_1/problem_1.java
@@ -1 +1,29 @@
-//Wirte your code logic here!
\ No newline at end of file
+//Wirte your code logic here!
+   int sum[] = new int[arr.length];
+        int temp = 0, tempsum =0;
+        int i,j;
+        int min = 0, max = 0;
+          for( i = 0; i< arr.length; i ++ ) {
+                 temp = arr[i];
+                 tempsum = tempsum + arr[i];
+        }
+        for( j = 0; j < arr.length ; j ++){
+          sum[j] = tempsum - arr[j];
+        }
+        for(int k = 0; k < sum.length; k++) {
+            min = sum[k];
+            if(sum[k] < min) {
+                min = temp;
+                temp = sum[k];
+                sum[k] = min;
+            }
+        }
+
+        for(int k = 0; k < sum.length; k++) {
+           if(sum[k] > max)
+            {
+                max = sum[k];
+            }
+        }
+    System.out.print(min+ " ");
+    System.out.print(max);
diff --git a/problem_14/problem_14.java b/problem_14/problem_14.java
index 64edb8f..e69de29 100644
--- a/problem_14/problem_14.java
+++ b/problem_14/problem_14.java
@@ -1 +0,0 @@
-//Wirte your code logic here!
\ No newline at end of file
diff --git a/problem_2/problem_2.java b/problem_2/problem_2.java
index 7323dde..3561d47 100644
--- a/problem_2/problem_2.java
+++ b/problem_2/problem_2.java
@@ -1,8 +1,5 @@
-static int simpleArraySum(int[] ar) {
-        int sum=0;
-        for(int i=0;i<ar.length;i++)
-        {
-            sum=sum+ar[i];
+int sum =0;
+        for (int i = 0; i< ar.length; i++){
+            sum = sum + ar[i];
         }
-       return sum;
-    }
+        return sum;
\ No newline at end of file
diff --git a/problem_3/problem_3.java b/problem_3/problem_3.java
index 64edb8f..34d0795 100644
--- a/problem_3/problem_3.java
+++ b/problem_3/problem_3.java
@@ -1 +1,25 @@
-//Wirte your code logic here!
\ No newline at end of file
+//Wirte your code logic here!
+    static int birthdayCakeCandles(int[] ar) {
+        int temp = 0;
+        int count = 0;
+        int a = 0;
+
+        for (int i = 0; i < ar.length; i++) {     
+            for (int j = i+1; j < ar.length; j++) {     
+               if(ar[i] < ar[j]) {    
+                   temp = ar[i];  
+                   ar[i] = ar[j];    
+                   ar[j] = temp;    
+               }     
+            }             
+        }
+
+          
+      for (int i=0; i < ar.length; i++){
+       if (ar[i] == ar[0])  {
+          count++; 
+       }
+      }
+        return count;
+     
+    }
\ No newline at end of file
diff --git a/problem_4/problem_4.java b/problem_4/problem_4.java
index 64edb8f..8258156 100644
--- a/problem_4/problem_4.java
+++ b/problem_4/problem_4.java
@@ -1 +1,23 @@
-//Wirte your code logic here!
\ No newline at end of file
+static String timeConversion(String s) {
+        int num;    
+        String res ="";  // store final time value
+        String temp = "0"; // add 0 before single digit time
+        int r = s.indexOf(':');     // storing index of first ':''
+        
+        // type conversion
+        num = Integer.parseInt(s.substring(0,r));
+        if((s.substring(s.length()-2,s.length()).equals("PM"))){
+                temp = "";
+                num = num + 12;
+            if(num == 24) {
+                num = num - 12;
+                 }       
+    }
+     else {
+        if(num == 12) 
+            num = 0;         
+    } 
+
+    res = temp + num + s.substring(r,s.length()-2);
+       return res;
+    }
\ No newline at end of file
diff --git a/problem_5/problem_5.java b/problem_5/problem_5.java
index 64edb8f..40ffac9 100644
--- a/problem_5/problem_5.java
+++ b/problem_5/problem_5.java
@@ -1 +1,27 @@
-//Wirte your code logic here!
\ No newline at end of file
+int size= grades.size();
+    int t = 0,check =0;
+    List<Integer> newArr = new ArrayList<Integer>(size);
+    for(int i = 0;  i < size;  i++) {
+        if(grades.get(i) < 40 ) {
+            if(grades.get(i) >= 38){
+                newArr.add(40);
+            }else{
+            newArr.add(grades.get(i));
+            }
+        }
+        else if(grades.get(i)% 5 == 0 && grades.get(i) >= 40){
+            newArr.add(grades.get(i));
+        }
+        else{
+            t = grades.get(i)/5 + 1;
+            t = t * 5;
+            check = t - grades.get(i);
+            if (check < 3) {
+                newArr.add(t);
+            } else  {
+                newArr.add(grades.get(i));
+            }
+        }
+    }
+    return newArr;
+    }
\ No newline at end of file