4 I 11 vr = mke_tble() fuctio serch(s){ m = [h(s)] if (m === udefied) puts(s + " is udefied") else puts(m) serch("") serch("foo") foo is udefied JvScript == === 1 h 345 fuctio delete_elemet(s){ vr vl = [h(s)] if (vl === udefied) puts("cot delete " + s + ".") else{ [h(s)] = udefied puts("ok. " + s + " hs bee deleted.") 5 45 delete_elemet("") delete_elemet("foobr") serch("") ok. hs bee deleted. cot delete foobr. is udefied "", "ygoto-isseki", "kym"] fuctio mke_tble(){ vr = [] vr v = h(strs[i]) [v] = strs[i] retur puts(mke_tble()),,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,h r,,,,ygoto,,,,,,,,,,,,,ky m,,,,,,,,,,,,ued,,,,,,,,,,,,,,ygo to-isseki,,,,,,,,,,,,,bc 1 3 for (; i < s.legth; i++){ = ( * 34 + s.chrcodeat(i)) % 13 "", "ygoto-isseki", "kym"] puts(strs[i] + " : " + h(strs[i])) : : 4 bc : 8 : ued : hr : : ygoto-isseki : 1 kym :, ued, hr,, kym
"", "ygoto-isseki", "kym"] fuctio mke_tble(){ vr = [] vr v = h(strs[i]) if ([v] === udefied) [v] = [strs[i]] else [v].push(strs[i]) retur puts(mke_tble().joi(" ")) 4 [ygoto-isseki] [] ygoto-isseki,ued,hr,,k ym,ygoto bc [, ued, hr,, kym] : : 4 bc : 8 : ued : hr : : ygoto-isseki : 1 kym : 8 [, ygoto] [bc ] + 1 1 i=1 1+ i 1 =1+ 1 m m i=1 (i 1) =1+ α 1 m O( + α/ 1/m) 10 8 11 m m i xi E xi E[x 1 + x + + x m ]=E[x 1 ]+E[x ]+ + E[x m ]=E[] = = me[x i ] E[x i ]=/m = α 9 1 α O(1 + α) h(k) =k mod m m 10
p 0 1 3 k = 0 3p + 1 p + p + 3 h(k) =k mod ( p 1) h(k) = 0 p p p + 1 p p + p + 3 = 0 1 1 1+ 1 1 1+ 1+ 3 = 0 + 1 + + 3 13 tble vr v = h(dt) while (tble[v]!== udefied){ v = (v + 1) % 31 --> -->ygoto-isseki -->bc 8-->ygoto 9-->hr 1 1 1-->kym 1 1 1--> 3 1 bc : : 3 vr sum = 0 vr p = 55 for (; i < s.legth; i++){ vr c = s.chrcodeat(i) sum = (sum * 5 + c) % p retur sum fuctio work(s){ puts(s + ": " + h(s)) work("bc") work("bc") work("ymmoto") work("motoym") bc: 39 bc: 39 ymmoto: 10 motoym: 10 14 vr v = (h(dt) + i + i * i) % 31 c * i + d * i * i if (tble[v] === udefied){ retur --> -->ygoto-isseki -->bc 8-->hr 9-->ygoto 1 1 1--> 1kym 1 1--> 1 bc : : 3 15 18 for (; i < s.legth; i++){ = ( * 34 + s.chrcodeat(i)) % 31 "", "ygoto-isseki", "kym"] puts(strs[i] + " : " + h(strs[i])) bc : : 3 vr v = (h(dt) + i * h(dt)) % 31 if (tble[v] === udefied){ retur fuctio h(s){ for (; i < s.legth; i++){ = ( * + s.chrcodeat(i)) %
--> -->ygoto-isseki -->bc 8-->ygoto 9--> 1 1 1--> 1kym 1hr 1--> 3 bc : : 3 19 DEL 0 1 3 4 5 8 3 1 4 5 8 1 3 4 5 8 3 3 1 4 5 8 1 4 fuctio serch_dt(tble, dt){ vr v = h(dt, i) vr v = h(dt, i) if (tble[v] === udefied){ if (tble[v] === dt){ retur v retur if (i >= m if (i >= m) brek; tble[v] === udefied) brek; puts("tble is full") ull /* * A hsh fuctio which outputs vlues * less th 0,011 */ fuctio h(pt){ vr s = 0 for (; i < 9; i++){ s = (s * 3444 + pt[i]) % 0011 retur s fuctio eq_pt(pt1, pt){ for (; i < 9; i++){ if (pt1[i]!= pt[i]) retur flse retur true vr pt_tble = [] fuctio dd_pt(pt, dist){ vr v = h(pt) if (pt_tble[v] === udefied){ pt_tble[v] = [[pt, dist]] retur 1 else{ lst = pt_tble[v] for (; i < lst.legth; i++) if (eq_pt(lst[i][0], pt)) retur 0 pt_tble[v].push([pt, dist]) retur 1 fuctio fid_pt(pt){ vr v = h(pt) if (pt_tble[v] === udefied) retur -1 else { vr lst = pt_tble[v] for (; i < lst.legth; i++) if (eq_pt(lst[i][0], pt)) retur lst[i][1] retur -1
5 fuctio fid_zero(pt){ for (; i < 9; i++){ if (pt[i] == 0) retur i retur -1 fuctio work(){ vr iit_pt = [0, 1,, 3, 4, 5,,, 8] vr queue = [[iit_pt, 0]] vr couter = 0 while (queue.legth > 0){ vr [pt, dist] = queue.shift() vr ddist = fid_pt(pt) if (ddist < 0){ dd_pt(pt, dist) couter += 1 vr p = fid_zero(pt) vr px = p % 3 vr py = Mth.floor(p / 3) if (px > 0){ ppt[p] = ppt[p - 1] ppt[p - 1] = 0 if (px < ){ ppt[p] = ppt[p + 1] ppt[p + 1] = 0 if (py > 0){ ppt[p] = ppt[p - 3] ppt[p - 3] = 0 if (py < ){ ppt[p] = ppt[p + 3] ppt[p + 3] = 0 puts(couter) 8 4 1 5 3