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doublevector.cpp
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67 lines (54 loc) · 1.22 KB
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#include "doublevector.h"
#include <cstring>
// 复制构造函数
doublevector::doublevector(const doublevector& d) : len(d.len), mapsize(d.mapsize) {
map = new int[mapsize + 1];
data = new int[mapsize];
memcpy(map, d.map, INTSIZE * (mapsize + 1));
memcpy(data, d.data, INTSIZE * mapsize);
}
// 构造函数
doublevector::doublevector(int n) : mapsize(n) {
map = new int[mapsize + 1];
data = new int[mapsize];
memset(map, 0xff, INTSIZE * (mapsize + 1));
memset(data, 0, INTSIZE * (mapsize));
}
doublevector::~doublevector() {
delete map;
delete data;
}
void doublevector::init(int n) {
mapsize = n;
map = new int[mapsize + 1];
data = new int[mapsize];
memset(map, 0xff, INTSIZE * (mapsize + 1));
memset(data, 0, INTSIZE * (mapsize));
}
void doublevector::insert(int d) {
if (map[d] == -1) {
data[len] = d;
map[d] = len;
++len;
}
}
void doublevector::erase(int d) {
if (map[d] == -1)
return;
int pos = map[d];
data[pos] = data[len - 1];
map[data[pos]] = pos;
-- len;
map[d] = -1;
}
uint32_t doublevector::size() {
return len;
}
bool doublevector::find(int d) {
return map[d] != -1;
}
void doublevector::clear() {
memset(map, 0xff, INTSIZE * (mapsize + 1));
memset(data, 0, INTSIZE * mapsize);
len = 0;
}