Cerner Corporation Interview Question Software Engineers
Country: United States
Interview Type: In-Person
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#include<bits/stdc++.h> #define ppi pair<int,int> #define mp make_pair #define ff first #define ss second using namespace std; string mv; class board { vector< vector<string> > brd; string R,B; //players names int cplayer; //current move vector< vector<int> > undo_redo; //undo_redo_moves int cntr,cntb; public : board() { } board(string a,string b) { cntr=cntb=12; R=a,B=b; brd.resize(8,vector<string> (8,"__")); cplayer=0; init_board(); } void player_is(int cp) { if(cp==0) cout<<"[ Your turn Mr. "<<R<<" ] {RED}\n"; else cout<<"[ Your turn Mr. "<<B<<" ] {BLUE}\n"; } bool out_of_board(ppi rc) { if(rc.ff>7 || rc.ff<0 || rc.ss>7 || rc.ff<0)return 1; return 0; } pair<ppi,ppi> parse_move(string mv) { return mp( mp(mv[0]-'a',mv[1]-'1') , mp(mv[3]-'a',mv[4]-'1') ); } bool gameover() { if(cntr==0) cout<<"Blue wins !! \n" ; else if(cntb==0) cout<<"Red wins !! \n"; if(cntb==0 || cntr==0)return 1; return 0; } void play_game() { while(!gameover()) { cout<<"here\n\n\n"; cmove(); } } void init_board(); void print_board(); void cmove(); int commit_move(pair<ppi,ppi> mv); int is_valid_and_commit(int pturn,pair<ppi,ppi> mv); void rules() { cout<<"\nEnter your move when prompted !! \nEnter string of length 5 .i.e [a-h][1-8] [a-h][1-8] \n\n"; } }; /* valid moves : red -- rows should increase ..... if not crowned */ void board :: init_board() { for(int i=0;i<3;i++) for(int j=0;j<8;j++) { if( (i+j)%2==1) brd[i][j]="NR"; else brd[i+5][j]="NB"; } } void board :: print_board() { cout<<"\n "; for(int i=0;i<8;i++) cout<<i+1<<" ";cout<<"\n"; for(int i=0;i<8;i++) { cout<<"\n "<<char('a'+i)<<" "; for(int j=0;j<8;j++) cout<<brd[i][j]<<" "; cout<<" "<<char('a'+i); } cout<<"\n\n "; for(int i=0;i<8;i++) cout<<1+i<<" "; cout<<"\n\n"; } string tmp; void board :: cmove() { player_is(cplayer); print_board(); cin>>mv>>tmp; mv+=" "+tmp; int val=is_valid_and_commit( cplayer , parse_move(mv) ); if(val==0) { cout<<"Invalid move !! \n"; cmove(); return ; } else if(val==1) { //add_to_stack(parse_move(mv)); } else { player_is(cplayer); //add_to_stack(parse_move(mv)); cmove(); return ; //return used so that player mayn't change.... } cplayer=(cplayer+1)%2; } int board :: is_valid_and_commit(int pturn,pair<ppi,ppi> mv) { cout<<mv.ff.ff<<" "<<mv.ff.ss<<" "<<mv.ss.ff<<" "<<mv.ss.ss<<"\n"; if(out_of_board(mv.ff) || out_of_board(mv.ss)) { cout<<"out of box \n"; return 0; } int fx=mv.ff.ff , fy=mv.ff.ss , tx=mv.ss.ff , ty=mv.ss.ss ; cout<<fx<<" "<<fy<<" "<<tx<<" "<<ty<<"\n"; if(pturn==0) //red turn or 0 implies RED { if(brd[fx][fy]=="NR") { if(tx-fx==1) { if(abs(fy-ty)!=1 || brd[tx][ty]!="__") return 0; swap(brd[tx][ty],brd[fx][fy]); //commit the move here itself return 1; } else if(tx-fx==2) { if(abs(fy-ty)!=2 || brd[tx][ty]!="__")return 0; if(ty-fy==2 && (brd[fx+1][fy+1]=="NB" || brd[fx+1][fy+1]!="CB") ) { swap(brd[tx][ty],brd[fx][fy]); brd[fx+1][fy+1]="__"; cntb--; return 2; } else if(ty-fy==-2 && (brd[fx+1][fy-1]=="NB" || brd[fx+1][fy-1]=="CB")) { swap(brd[tx][ty],brd[fx][fy]); brd[fx+1][fy+1]="__"; cntb--; return 2; } return 0; } else return 0; } else if(brd[fx][fy]=="CR") { if( abs(fx-tx)==1) { if( abs(fy-ty)!=1 || brd[tx][ty]!="__" )return 0; swap(brd[fx][fy],brd[tx][ty]); return 1; } else if( abs(fx-tx)==2 ) { if( abs(fy-ty)!=2 || brd[tx][ty]!="__")return 0; if(tx-fx==2 && ty-fy==2 && (brd[fx+1][fy+1]=="NB" || brd[fx+1][fy+1]!="CB") ) { swap(brd[fx][fy],brd[tx][ty]); brd[fx+1][fy+1]="__"; cntb--; return 2; } else if(tx-fx==2 && ty-fy==-2 && (brd[fx+1][fy-1]=="NB" || brd[fx+1][fy-1]=="CB")) { swap(brd[fx][fy],brd[tx][ty]); brd[fx+1][fy-1]="__"; cntb--; return 2; } else if(tx-fx==-2 && ty-fy==2 && ( brd[fx-1][fy+1]=="NB" || brd[fx-1][fy+1]=="CB")) { swap(brd[fx][fy],brd[tx][ty]); brd[fx-1][fy+1]="__"; cntb--; return 2; } else if(mv.ss.ff-mv.ff.ff==-2 && mv.ss.ss-mv.ff.ss==-2 && (brd[mv.ff.ff-1][mv.ff.ss-1]=="NB" || brd[mv.ff.ff-1][mv.ff.ss-1]=="CB")) { swap(brd[fx][fy],brd[tx][ty]); brd[fx-1][fy-1]="__"; cntb--; return 2; } return 0; } } else return 0; } else { if(brd[fx][fy]=="NB") { if(tx-fx==-1) { if(abs(ty-fy)!=1 || brd[tx][ty]!="__") return 0; swap(brd[fx][fy],brd[tx][ty]); return 1; } else if(tx-fx==-2) { if(abs(ty-fy)!=2 || brd[tx][ty]!="__")return 0; if(ty-fy==2 && ( brd[fx-1][fy+1]=="NR" || brd[fx-1][fy+1]=="CR") ) { swap(brd[tx][ty],brd[fx][fy]); brd[fx-1][fy+1]="__"; cntr--; return 2; } else if(ty-fy==-2 && (brd[fx-1][fy-1]!="NR" || brd[fx-1][fy-1]!="CR")) { swap(brd[tx][ty],brd[fx][fy]); brd[fx-1][fy-1]="__"; cntr--; return 2; } else return 0; } else return 0; } else if(brd[fx][fy]=="CB") { if( abs(fx-fy)==1) { if( abs(fy-ty)!=1 || brd[tx][ty]!="__" )return 0; swap(brd[fx][fy],brd[tx][ty]); return 1; } else if( abs(tx-fx)==2 ) { if( abs(fy-ty)!=2 || brd[tx][ty]!="__")return 0; if(tx-fx==2 && ty-fy==2 && (brd[fx+1][fy+1]=="NR" || brd[fx+1][fy+1]!="CR") ) { swap(brd[fx][fy],brd[tx][ty]); brd[fx+1][fy+1]="__"; cntr--; return 2; } else if(tx-fx==2 && ty-fy==-2 && (brd[fx+1][fy-1]=="NR" || brd[fx+1][fy-1]=="CR")) { swap(brd[fx][fy],brd[tx][ty]); brd[fx+1][fy-1]="__"; cntr--; return 2; } else if(tx-fx==-2 && ty-fy==2 && ( brd[fx-1][fy+1]=="NR" || brd[fx-1][fy+1]=="CR")) { swap(brd[fx][fy],brd[tx][ty]); brd[fx-1][fy+1]="__"; cntr--; return 2; } else if(mv.ss.ff-mv.ff.ff==-2 && mv.ss.ss-mv.ff.ss==-2 && (brd[mv.ff.ff-1][mv.ff.ss-1]=="NR" || brd[mv.ff.ff-1][mv.ff.ss-1]=="CR")) { swap(brd[fx][fy],brd[tx][ty]); brd[fx-1][fy-1]="__"; cntr--; return 2; } else return 0; } else return 0; } else return 0; } } int main() { board o("d","p"); o.rules(); o.play_game(); return 0; }I hope it may give you some idea , although its a lot of code .
- dhsharma27 May 25, 2016