Data commit

Task/Determine-if-a-string-is-collapsible/D/determine-if-a-string-is-collapsible.d

@@ -0,0 +1,27 @@
+import std.stdio;
+
+void collapsible(string s) {
+    writeln("old: <<<", s, ">>>, length = ", s.length);
+
+    write("new: <<<");
+    char last = '\0';
+    int len = 0;
+    foreach (c; s) {
+        if (c != last) {
+            write(c);
+            len++;
+        }
+        last = c;
+    }
+    writeln(">>>, length = ", len);
+
+    writeln;
+}
+
+void main() {
+    collapsible(``);
+    collapsible(`"If I were two-faced, would I be wearing this one?" --- Abraham Lincoln `);
+    collapsible(`..1111111111111111111111111111111111111111111111111111111111111117777888`);
+    collapsible(`I never give 'em hell, I just tell the truth, and they think it's hell. `);
+    collapsible(`                                                    --- Harry S Truman  `);
+}