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test.exo7.js
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test.exo7.js
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const readline = require( 'readline' );
const lines = [];
const terminal = readline.createInterface( process.stdin, process.stdout );
function createList() {
return {
root: null,
length: 0,
isRoot() {
return this.root !== null;
},
getRoot() {
return this.root;
},
createNode( val ) {
return {
value: val,
next: null
};
},
add( val ) {
const
newNode = this.createNode( val );
if ( this.root ) {
newNode.next = this.root;
this.root = newNode;
} else {
this.root = newNode;
}
this.length++;
return this;
},
each( fn ) {
if ( typeof fn === 'function' ) {
let current = this.root;
while( current ) {
fn.call( this, current );
current = current.next;
}
}
}
};
}
function separateData( line ) {
return line.split( '' ).map( i => parseInt( i ) );
}
function createTuple( arr = [] ) {
const
tuple = [ [], [] ];
for( let i = 0; i < arr.length; i++ ) {
i % 2 === 0 ? tuple[ 0 ].push( arr[ i ] ) : tuple[ 1 ].push( arr[ i ] );
}
return tuple;
}
function makAll( list = [ ] ) {
let temp, data;
const
result = createList();
if ( list.length <= 1 ) {
result.add( list );
} else if ( list.length === 2 ) {
result.add( [ list[ 0 ], list[ 1 ] ] );
result.add( [ list[ 1 ], list[ 0 ] ] );
} else {
for( let i = 0; i < list.length; i++ ) {
data = makAll( list.slice( 1 ) );
data.each( item => {
item.value.unshift( list[ 0 ] );
result.add( item.value );
} );
for ( let j = 1; j < list.length; j++ ) {
temp = list[ j - 1 ];
list[ j - 1 ] = list[ j ];
list[ j ] = temp;
}
}
}
return result;
}
function init( line ) {
let needed, final = [];
const list = [];
const
part = separateData( line ).sort( ( a, b ) => {
return a < b ? 1 : -1;
} );
final = makAll( part );
final.each( item => {
if ( item.value[ 0 ] !== 0 && item.value[ 1 ] !== 0 ) {
list.push( createTuple( item.value ) );
}
} );
if ( !list.length ) {
return 0;
}
needed = list.map( item => {
const
result = [ '', '', -1 ];
item[ 0 ].forEach( item => {
result[ 0 ] += item
} );
item[ 1 ].forEach( item => {
result[ 1 ] += item
} );
result[ 0 ] = parseInt( result[ 0 ] );
result[ 1 ] = parseInt( result[ 1 ] );
result[ 2 ] = Math.abs( result[ 0 ] - result[ 1 ] );
return result;
} );
needed.sort( function ( a, b ) {
if ( a[ 2 ] < b[ 2 ] ) {
return -1;
}
return 1;
} );
return needed[ 0 ][ 2 ] || 0;
}
terminal.on( 'line', ( data ) => {
let
n = 0;
if ( lines.length ) {
n = parseInt( lines[ 0 ] );
}
lines.push( data );
const
needed = lines.length - 1;
if ( needed > 0 ) {
console.log( `Case #${ needed }: ${ init( data ) }` );
if ( needed === n ) {
terminal.close();
return;
}
}
} );
terminal.on( 'close', () => (
process.exit( 0 )
) );