Update README.txt

README.txt

@@ -1,4 +1,170 @@
-Сортировки
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "vector.h"
+#include "util.h"
+
+#define VECTOR_START_SIZE	8
+#define VECTOR_GROW_FACTOR	2
+#define ITEMSZ sizeof(int)
+
+void
+vector_init(ivector *v)
+{
+  	assert(v);
+
+    	v->n = 0;
+      	v->maxsz = VECTOR_START_SIZE;
+        	v->data = xmalloc(ITEMSZ * VECTOR_START_SIZE);
+}
+
+void
+vector_initdata(ivector *v, int *arr, size_t arrsz)
+{
+  	assert(v && arrsz);
+    	
+      	v->n = arrsz;
+        	v->maxsz = (arrsz > VECTOR_START_SIZE) ? arrsz : VECTOR_START_SIZE;
+          	v->data = xmalloc(ITEMSZ * v->maxsz);
+            	memcpy(v->data, arr, ITEMSZ * arrsz);
+}
+
+void
+vector_free(ivector *v)
+{
+  	assert(v);
+
+    	v->n = 0;
+      	v->maxsz = 0;
+        	xfree(v->data);
+          	v->data = NULL;
+}
+
+size_t
+vector_len(const ivector *v)
+{
+  	assert(v);
+
+    	return v->n;
+}
+
+int *
+vector_data(const ivector *v)
+{
+  	assert(v);
+    	return v->data;
+}
+
+void
+vector_resize(ivector *v, int n)
+{
+  	assert(v);
+
+    	if (n < 0) return;
+      	
+        	if ((size_t)n > v->maxsz) {
+            		size_t new_maxsz = v->maxsz;
+                		while (new_maxsz < (size_t)n) {
+                      			new_maxsz *= VECTOR_GROW_FACTOR;
+                    }
+                    		v->data = xrealloc(v->data, ITEMSZ * new_maxsz);
+                        		v->maxsz = new_maxsz;
+          }
+          	v->n = n;
+}
+
+void
+vector_set(ivector *v, size_t idx, int val)
+{
+  	assert(v && idx < v->n);
+    	v->data[idx] = val;
+}
+
+int
+vector_get(const ivector *v, size_t idx)
+{
+  	assert(v && idx < v->n);
+    	return v->data[idx];
+}
+
+void
+vector_push(ivector *v, int val)
+{
+  	assert(v);
+    	
+      	if (v->n == v->maxsz) {
+          		vector_resize(v, v->n + 1);
+        } else {
+          		v->n++;
+        }
+        	v->data[v->n - 1] = val;
+}
+
+void
+vector_pop(ivector *v)
+{
+  	assert(v && v->n > 0);
+    	v->n--;
+}
+
+void
+vector_insert(ivector *v, size_t idx, int val)
+{
+  	assert(v && v->n >= idx);
+    	
+      	if (v->n == v->maxsz) {
+          		vector_resize(v, v->n + 1);
+        } else {
+          		v->n++;
+        }
+        	
+          	// Сдвигаем элементы вправо, начиная с idx
+            	for (size_t i = v->n - 1; i > idx; i--) {
+                		v->data[i] = v->data[i - 1];
+              }
+              	v->data[idx] = val;
+}
+
+void
+vector_del(ivector *v, size_t idx)
+{
+  	assert(v && idx < v->n);
+    	
+      	// Сдвигаем элементы влево, начиная с idx+1
+        	for (size_t i = idx; i < v->n - 1; i++) {
+            		v->data[i] = v->data[i + 1];
+          }
+          	v->n--;
+}
+
+void
+vector_clear(ivector *v)
+{
+  	vector_resize(v, 0);
+}
+}
+          }
+}
+              }
+        }
+        }
+}
+}
+        }
+        }
+}
+}
+}
+                    }
+          }
+}
+}
+}
+}
+}
+}
 ----------
 
 Задачи: