diff --git a/Ch 01. Arrays and Strings/Stringpermutation.c b/Ch 01. Arrays and Strings/Stringpermutation.c
new file mode 100644
index 0000000..a3eb1db
--- /dev/null
+++ b/Ch 01. Arrays and Strings/Stringpermutation.c	
@@ -0,0 +1,34 @@
+#include <stdio.h>
+void swap(char *p,char *q)
+{
+char temp;
+temp=*p;
+*p=*q;
+*q=temp;
+}
+void permute(char *a,int l,int r)
+{
+int i;
+if (l==r)
+printf("%s\n", a);
+else
+{
+for (i=l;i<=r;i++)
+{
+swap((a+l),(a+i));
+permute(a,l+1,r);
+swap((a+l),(a+i));
+}
+}
+}
+void main()
+{
+char str[100];
+printf("Enter the String\n");
+gets(str);
+printf("\n");
+int n = strlen(str);
+printf("All permutations are :\n");
+permute(str,0,n-1);
+
+}