From 5bbcb1f542c239ce1e9b5a7d3c7214a7bf001d6a Mon Sep 17 00:00:00 2001
From: EliteTK <tomasz.kramkowski@gmail.com>
Date: Sat, 24 May 2014 12:58:39 +0100
Subject: More random stuff.

---
 rot.c          | 26 ++++++++++++++++++++
 split3.c       | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 vectest.c      | 11 +++++++++
 xlib-testing.c | 40 +++++++++++++++++++++++++++++++
 4 files changed, 153 insertions(+)
 create mode 100644 rot.c
 create mode 100644 split3.c
 create mode 100644 vectest.c
 create mode 100644 xlib-testing.c

diff --git a/rot.c b/rot.c
new file mode 100644
index 0000000..a147376
--- /dev/null
+++ b/rot.c
@@ -0,0 +1,26 @@
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include <stdlib.h>
+
+#define mod(A) ((A)%26)
+
+int main(int argc, char **argv)
+{
+    if(argc!=3)
+        exit(1);
+    char *string = *(argv+1);
+    int i, rot = (int)strtol(*(argv+2), NULL, 10);
+    for(i=0; i<strlen(string); i++)
+        if(isalpha(string[i])){
+            if(string[i]-'A'<26){ // Simple way to differentiate lower and upper case if all letters are known to be alpha.
+                putchar(mod(string[i]-'A'+rot)+'A');
+            }else{
+                putchar(mod(string[i]-'a'+rot)+'a');
+            }
+        }else{
+            putchar(string[i]);
+        }
+    putchar('\n');
+    return 0;
+}
diff --git a/split3.c b/split3.c
new file mode 100644
index 0000000..7f2fc18
--- /dev/null
+++ b/split3.c
@@ -0,0 +1,76 @@
+#include <stdio.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+
+int *genccountdict(char *);
+char *nodup(char *, int *);
+char *nnodup(char *, int *);
+char *dup(char *, int *);
+
+int main(int argc, char **argv)
+{
+    int i;
+    if(argc!=2)
+        exit(1);
+
+    char *string = *(argv+1);
+    int *dict = genccountdict(string);
+
+    for(i = 0; i < strlen(string); i++)
+        string[i] = toupper(string[i]);
+
+    printf("nodup: %s\n", nodup(string, dict));
+    printf("nnodup: %s\n", nnodup(string, dict));
+    printf("dup: %s\n", dup(string, dict));
+    return 0;
+}
+
+int *genccountdict(char *input)
+{
+    int *dict = calloc(sizeof(int), 26);
+    int i;
+    for(i=0; i<strlen(input); i++)
+        if(isalpha(input[i]))
+            dict[toupper(input[i])-'A']++;
+    return dict;
+}
+
+char *nodup(char *input)
+{
+    char *output = malloc(strlen(input)+1);
+    int i, outpt = 0;
+
+    for(i=0; i<strlen(input); i++){
+        if(!dict[input[i]-'A']){
+            output[outpt++]=input[i];
+            dict[input[i]-'A'] = 1;
+        }
+    }
+    output[outpt]='\0';
+    return output;
+}
+
+char *nnodup(char *input, int *dict)
+{
+    char *output = malloc(strlen(input)+1);
+    int i, outpt = 0;
+    for(i=0; i<strlen(input); i++)
+        if(dict[input[i]-'A']==1)
+            output[outpt++]=input[i];
+    output[outpt]='\0';
+    return output;
+}
+
+char *dup(char *input, int *dict)
+{
+    char *output = malloc(strlen(input)+1);
+    int i, outpt = 0;
+    for(i=0; i<strlen(input); i++)
+        if(dict[input[i]-'A']>1)
+            output[outpt++]=input[i];
+    output[outpt] = '\0';
+    int ndict[26];
+    memset(ndict, 0, 26*sizeof(int));
+    return nodup(output, ndict);
+}
diff --git a/vectest.c b/vectest.c
new file mode 100644
index 0000000..042bc28
--- /dev/null
+++ b/vectest.c
@@ -0,0 +1,11 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <vecmat/vec.h>
+
+int main(int argc, char **argv)
+{
+    Vec *v = vec_new(123, 12.1, 45);
+    char *s = malloc(50);
+    vec_tostring(s, v);
+    printf(s);
+}
diff --git a/xlib-testing.c b/xlib-testing.c
new file mode 100644
index 0000000..cfb35c0
--- /dev/null
+++ b/xlib-testing.c
@@ -0,0 +1,40 @@
+#include <X11/Xlib.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(int argc, char **argv)
+{
+    Display *d = XOpenDisplay(NULL);
+    if (!d) {
+        fprintf(stderr, "Could not open display.");
+        exit(1);
+    }
+
+    unsigned long int black = BlackPixel(d, DefaultScreen(d));
+    unsigned long int white = WhitePixel(d, DefaultScreen(d));
+
+    Window w = XCreateSimpleWindow(d, DefaultRootWindow(d), 0, 0, 300, 300, 0, black, white);
+
+    XSelextInput(d, w, StructureNotifyMask);
+
+    XMapWindow(d, w);
+
+    GC gc = XCreateGC(d, w, 0, NULL);
+
+    XSetForeground(d, gc, white);
+
+    while(1) {
+        XEvent e;
+        XNextEvent(d, &e);
+        if (e.type == MapNotify)
+            break;
+    }
+
+    XDrawLine(d, w, gc, 10, 60, 180, 20);
+
+    XFlush(d);
+
+    sleep(10);
+
+    XCloseDisplay(d);
+}
-- 
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