diff --git a/double ended queue/doubleend.c b/double ended queue/doubleend.c
new file mode 100644
index 0000000..ecbe945
--- /dev/null
+++ b/double ended queue/doubleend.c	
@@ -0,0 +1,110 @@
+#include<stdio.h>
+#include<stdlib.h>
+int i,n,r=-1,f=0;
+void insert(int *);
+void delete(int *);
+void display(int *);
+int main()
+{
+ int *a,o;
+ printf("\ndouble ended queue");
+
+ printf("\nenter the size of array");
+ scanf("%d",&n);
+
+ a=(int*)calloc(n,sizeof(int));
+
+ printf("\nselect your choice\n");
+ int f=1;
+  while(f==1)
+   {
+   printf("1)insert\n");
+   printf("2)delete\n");
+   printf("3)exit");
+   scanf("%d",&o);
+     switch(o)
+     {
+       case 1:{
+              insert(a);
+              break;
+              }
+       case 2:{
+               delete(a);
+               break;
+              }
+       case 3:{
+              f=0;    
+               }
+       
+     }//switch
+   }//while
+}//main
+     
+void insert(int *a)
+ {
+  int o;
+  printf("where you want to insert");
+  printf("1)starting");
+  printf("2)end");
+  scanf("%d",&o);
+  switch(o)
+    {
+     case 2:{
+             printf("enter the element");
+             scanf("%d",&a[++r]);
+             }
+      case 1:{
+              if(r==n-1)
+              {  
+              printf("overflow");
+              }
+            else
+            { 
+             printf("enter the element");
+              for(i=r;i>=0;i--)
+              {
+               a[i+1]=a[i];
+              }
+             scanf("%d",&a[0]);
+            }
+           }
+     }
+  }
+
+void delete(int *a)
+ {
+  int o;
+  printf("where you want to delete");
+  printf("1)starting");
+  printf("2)end");
+  scanf("%d",&o);
+  switch(o)
+    {
+     case 2:{
+             r--;
+             }
+      case 1:{
+              if(r==0)
+              {  
+              printf("underflow");
+              }
+            else
+            { 
+             for(i=0;i<=r;i++)
+              {
+               a[i]=a[i+1];
+              } 
+              
+            }}
+     }
+  }
+     
+void display(int *a)
+ { 
+  for(i=f;i<=r;i++)
+   {
+    printf("%d",a[i]);
+   }
+ }
+              
+             
diff --git a/fast transpose/bin/Debug/fast transpose.exe b/fast transpose/bin/Debug/fast transpose.exe
new file mode 100644
index 0000000..449591f
Binary files /dev/null and b/fast transpose/bin/Debug/fast transpose.exe differ
diff --git a/fast transpose/fast transpose.cbp b/fast transpose/fast transpose.cbp
new file mode 100644
index 0000000..4f2355d
--- /dev/null
+++ b/fast transpose/fast transpose.cbp	
@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
+<CodeBlocks_project_file>
+	<FileVersion major="1" minor="6" />
+	<Project>
+		<Option title="fast transpose" />
+		<Option pch_mode="2" />
+		<Option compiler="gcc" />
+		<Build>
+			<Target title="Debug">
+				<Option output="bin/Debug/fast transpose" prefix_auto="1" extension_auto="1" />
+				<Option object_output="obj/Debug/" />
+				<Option type="1" />
+				<Option compiler="gcc" />
+				<Compiler>
+					<Add option="-g" />
+				</Compiler>
+			</Target>
+			<Target title="Release">
+				<Option output="bin/Release/fast transpose" prefix_auto="1" extension_auto="1" />
+				<Option object_output="obj/Release/" />
+				<Option type="1" />
+				<Option compiler="gcc" />
+				<Compiler>
+					<Add option="-O2" />
+				</Compiler>
+				<Linker>
+					<Add option="-s" />
+				</Linker>
+			</Target>
+		</Build>
+		<Compiler>
+			<Add option="-Wall" />
+		</Compiler>
+		<Unit filename="main.c">
+			<Option compilerVar="CC" />
+		</Unit>
+		<Extensions>
+			<code_completion />
+			<envvars />
+			<debugger />
+		</Extensions>
+	</Project>
+</CodeBlocks_project_file>
diff --git a/fast transpose/fast transpose.layout b/fast transpose/fast transpose.layout
new file mode 100644
index 0000000..636fecc
--- /dev/null
+++ b/fast transpose/fast transpose.layout	
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
+<CodeBlocks_layout_file>
+	<FileVersion major="1" minor="0" />
+	<ActiveTarget name="Debug" />
+	<File name="main.c" open="1" top="1" tabpos="1" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+		<Cursor>
+			<Cursor1 position="1071" topLine="33" />
+		</Cursor>
+	</File>
+</CodeBlocks_layout_file>
diff --git a/fast transpose/main.c b/fast transpose/main.c
new file mode 100644
index 0000000..c42121b
--- /dev/null
+++ b/fast transpose/main.c	
@@ -0,0 +1,52 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+struct smarray
+{
+    int r,c,v;
+};
+int main()
+{
+    int i,r,c,t,pb=0;
+    struct smarray *a,*b;
+    int *rowstart,*rowsize;
+
+    printf("\n enter r");
+    scanf("%d",&r);
+    printf("\n enter c");
+    scanf("%d",&c);
+    printf("\n enter t");
+    scanf("%d",&t);
+    a=(struct smarray*)malloc(t*sizeof(struct smarray));
+    b=(struct smarray*)malloc(t*sizeof(struct smarray));
+    rowstart=(int*)malloc(c*sizeof(int));
+    rowsize=(int*)calloc(c,sizeof(int));
+    printf("\n enter array elements");
+    for(i=0;i<t;i++)
+    {
+        scanf("%d%d%d",&a[i].r,&a[i].c,&a[i].v);
+    }
+    for(i=0;i<t;i++)
+    {
+        rowsize[a[i].c]++;
+    }
+    rowstart[0]=0;
+    for(i=1;i<c;i++)
+    {
+        rowstart[i]=rowsize[i-1]+rowstart[i-1];
+    }
+    for(i=0;i<t;i++)
+    {
+        pb=rowstart[a[i].c];
+        b[pb].r=a[i].c;
+        b[pb].c=a[i].r;
+        b[pb].v=a[i].v;
+        rowstart[a[i].c]++;
+    }
+    printf("\n after transpose");
+    for(i=0;i<t;i++)
+    {
+        printf("\n %d %d %d",b[i].r,b[i].c,b[i].v);
+    }
+
+}
diff --git a/fast transpose/obj/Debug/main.o b/fast transpose/obj/Debug/main.o
new file mode 100644
index 0000000..714a166
Binary files /dev/null and b/fast transpose/obj/Debug/main.o differ
diff --git a/python/hello.py b/python/hello.py
new file mode 100644
index 0000000..e75154b
--- /dev/null
+++ b/python/hello.py
@@ -0,0 +1 @@
+print("hello world")
\ No newline at end of file
diff --git a/static hashing/shashing.c b/static hashing/shashing.c
new file mode 100644
index 0000000..78f0ff5
--- /dev/null
+++ b/static hashing/shashing.c	
@@ -0,0 +1,42 @@
+#include<stdio.h>
+#include<stdlib.h>
+int main()
+ {
+  int *a,temp,count=0,i;
+  
+  a=(int*)malloc(sizeof(int)*10);
+   for(i=0;i<10;i++)
+   {
+    a[i]=-1;
+   }
+  while(count!=10)
+   {
+    printf("\n enter the element you want to insert");
+    scanf("\n%d",&temp);
+    i=temp%10;
+    if(a[i]==-1)
+    {
+    a[i]=temp;
+    count++;
+    }
+    else 
+    {
+     while(a[i]!=-1)
+      {
+       i=++i%10;
+      }
+     a[i]=temp;
+     count++;
+    }
+   }
+  if(count==10)
+   {
+    printf("\n stack overflow\n");
+   }
+   
+  for(i=0;i<10;i++)
+   {
+    printf("\n%d",a[i]);
+   }
+  }
+