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Hash

Quiz by
Hralyb
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Last updated: May 14, 2025
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First submittedMay 14, 2025
Times taken1
Average score100.0%
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Hint
Answer
hash funkce (pid+pg)
int hashPg(int pid, int pg);
HashTBRec
struct HashTBRec {
 
int pid;
 
int pg;
 
int fr;
 
struct HashTBRec *next;
 
};
pg2fr
int pg2fr(int pid, int pg) {
 
struct HashTBRec *rec = hashTb[hashPg(pid, pg)];
 
while (rec != NULL) {
 
if (rec->pid == pid && rec->pg == pg)
 
return rec->fr;
 
rec = rec->next;
 
}
 
return -1;
 
}
hash funkce (reg+pg)
int hashPg(int reg, int pg);
HashTBRec
struct HashTBRec {
 
int reg;
 
int pg;
 
int fr;
 
struct HashTBRec *next;
 
};
Hint
Answer
local to global
int local_to_global(int pid, int local_reg);
pg2fr
int pg2fr(int pid, int reg, int pg) {
 
int global_reg = local_to_global(pid, reg);
 
struct HashTBRec *rec = hashTb[hashPg(global_reg, pg)];
 
while (rec != NULL) {
 
if (rec->reg == global_reg && rec->pg == pg)
 
return rec->fr;
 
rec = rec->next;
 
}
 
return -1;
 
}
invTBItem deklarace
struct InvTBItem {
 
int pid;
 
int pg;
 
};
velikost ramcove pameti
struct InvTBItem InvTb[N];
pg2fr_inv
int pg2fr_inv(int pid, int pg) {
 
for (int i = 0; i < N; i++) {
 
if (InvTb[i].pid == pid && InvTb[i].pg == pg)
 
return i;
 
}
 
return -1;
 
}
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