From ec6efad8f7a1bed09bfacbfb2868f6353c3c7f4e Mon Sep 17 00:00:00 2001
From: Luke Hubmayer-Werner <mongoose41@gmail.com>
Date: Sat, 3 Dec 2022 17:12:06 +1030
Subject: [PATCH] 2022 Day 3 Scala

---
 2022/day3-input | 300 ++++++++++++++++++++++++++++++++++++++++++++++++
 2022/day3.scala |  23 ++++
 2 files changed, 323 insertions(+)
 create mode 100644 2022/day3-input
 create mode 100644 2022/day3.scala

diff --git a/2022/day3-input b/2022/day3-input
new file mode 100644
index 0000000..1524f4b
--- /dev/null
+++ b/2022/day3-input
@@ -0,0 +1,300 @@
+ZTmtZvZLTFNLMQMNRvZncdcHwcScJvcdHnVfwV
+zqjqrzqjCqrjtqWhqChqrznhcfdfVnVSVgcffcgJcSgd
+rtDGpzjjqjlrGsWqBWFRsbTPFQMTbRNRFmbs
+FFlnlnVlmQqcBVhBRrSrGSwVdRJbztSt
+NPPNsffWfNztRZSJNG
+WpgpTTHDpgTDDpMLPGgMHslmBmmHcBQnFmcqhmnjlqQm
+VlVNLlPQhtnDRPnP
+QgqTffzZqgvgzWmqqZmGcDthtRFvnnFnhJtJJDDt
+WGTBzSqBQTQmZBWHswpNbswLbSNCNl
+PFzFQDdLjMzzQDhnDNmwZmqwRsmRRmMVNM
+GtSbbtlttvvtBvtHBmqqNqVVwsVgCmRw
+brlvctHfrlrqvGvcTpjDdFnLDhdfjLhQpn
+fTqzgFrcmzTrTNgMzFzTrgtbMtVMVPSLVbvSStRttPVV
+lsHnlQhplQpsHhlDJsswNwZPZZVNwvnSZSVvVS
+BJpsGWhWQQHdGHlpWpfgrmqgNBmTTBqzTrzr
+PLPPrDNHDBnrWNBmjDmjbqqgzjgjQC
+GJpFwpvFFsJpwvwwGwJZJRptzdQSSZTmCjTQmTSQjjZSggQQ
+ffwGGtJGCfLcNMNNfNLW
+nlTzllGwlQHHGMSrrhQLcvbcghgcvL
+fFNpttBRFFRNtJJnfNWmqbhhZrZrcjgpvLrvrvcvbr
+JBftFFsVRWtNWRsmWtRfftGHGPDDCnTDHSCwzwVnwGSw
+LsrZLbLmPSTZtPcc
+zpnpljpdwhRpfNLlPWPtTPcnMWPcctTV
+qlhNNjldqdpgqdfhjpphdsgmmrDBBJJQgHrmDHLQJb
+ndDrsBbpqspHCjzVBCHjMj
+LWFcQFQtVVdcCMHC
+RLthwTWLTSLwTllRLLlLNlPpPGfrGnqDdGqsZqsZsZhb
+jHnJLJrcBbrRHJpnLBBjdHbjfgvGwstwWwdsWWshfhFzFfhv
+PZDQMNTMQwtgvGTGhf
+lqlPPQZQVSQCPSCPDmLppjqRqHngLHjRgLnL
+MfQrhdzNMfMPsNNmPmqPLCLCVLBnbP
+WVtcVvJJVjvFZZmgGjnjLBjmnnHB
+FFtcZRpWJcSDTwlVMhMDwrrDzM
+bSMbrQGZwwqbrbGMdTQGMwQdfFBLDLHLHssDgsHHBJDsFfwL
+lpPPCccvVPvccPzcWLDJFJBsBzJJHsqHjg
+tnqlPlVlNvNZZSSrGGZb
+NlBBBBBwmwcMgLwLVVLLLscHdnMDdbHJCbdvJbPdDDJHvn
+ZRWQWSfGhtSjqZhffZhhRjtdvPFHvCJbFdCFFDdHJdPb
+fpqGhQWWZRhfqRSqrpGllLcVLmscgrLwBmgCzN
+wHHHwDNCzZwzZfpzwsswzfzvnvnMDMgMhMGGFGRVdMnvcF
+mLtttqTPBtSJTSBQWlmcMvVdclnvhFggdGhRdn
+QBLPSLQQWmLtTBtBSjZfsbwbHzpjGzHfpzzw
+zDPBqBPqwzzsqlTzzPzqjttNbCPJVtPCbrvjvCZP
+MFhMhGfFfGpWWpHhFfRpHjVNbDbJjVMjrVvVNtMtbt
+gfRSmpggSFRgfGRphFGgfgBSBTqzSsdlTLqdsnsDBqLw
+QTTdWZZZTrhCZrjhVt
+SBJJNRRvvRpwwspNSpTPjCMVhhtCjGThjBjB
+fJJpvRRwNRSwvzRzRvzSgSRNqFTFDbFmqncQTbdFfnbDQnLW
+wSjwwjWhbhhjWjdqSVpqSndvMdmM
+NTvPBrZgPPHDFrFHGvZHRBqVBpCQVRRdmpRppdqM
+TgDHZPsNTWbbwsjtvw
+HVRPRwJVppQNpGmvMvmqqq
+WcttbWsWsdDdbFDSSWclZGvFLMvfvjfzNvLGzLmfqv
+tglcmSldWlBQBThRQBhg
+LDGGfPFLGsfFnGLfMzfJVccNzmcmwm
+qggSRgtjgCRtdtNZCJMCcZwTZVcm
+RBbHbbRRnLBDDrvN
+pThhMtMtTsWspWTnGjpsVHPdjdjvHdgVvLDVVSjd
+JQNrrwCFrSRLRVLnSN
+JQcJFCfcnfQmrbblQqlthGqzpZpGTBMWTMqtst
+DzVmzDDgsNdHHLGJhJppPPllqSgbql
+jrBWjcQMCRchPShwSblpbW
+ZjRrSCtnnrtBQTcrSZmGtGFFNDHmHVVmVtzz
+GSbGbrTGRRScMlVFjfbqqjdF
+tvDmZhtNtHDttBhCmHDJHNwlpjslMwfflvpqldsFpMlf
+HdBhLDhJDLWWLDCSQGcrQPGccLTGcQ
+tNzrCdJBrrtQdtgQdlQQtrnMZhMTqzHqqTFZZFqTHFMV
+bwbsRDvfwfsfcfSFqMmqDqFVNMNVVH
+PRvfbSjNvPWPlLllLJ
+MjMRRNRMjZtGVGpBCMMCDV
+vwfhFzhvcJQQwJlQSddzQwFWGqcDpCDqBqDTcGZTTVTCWG
+dvFJzrfZJhddLNLPHsrtRbPr
+BmbsFNBhszGgGtGl
+MSHVwdSwZflGlcqqpM
+QvwZCnnnSvZdCSWrNmDlPPBPDhPmjW
+MDwpRzRwMzMsdVSjdMWWMQdW
+gmlftnDtHnHHVWSWBjWjWgvW
+HbtrhbbGRNDpbCDz
+cjVGqQqVqBFhDtvB
+ZnTTfTffZZmDhBtJZG
+fNzbpzlHTlgHNzlRTlRNbHrWwrCwWSSdQddNjwVcjGSd
+WWrPMhwhnjpSLCpDlSSW
+sNGBGdmTbZNGsmbstNLZGZDBRSlqSRCfRSCqRRDDqCqp
+NvvcGtsLdTNZmLTmdJPcnnMFjFMcrVJhMF
+wMRQMSQZHznRsqRbWp
+ddgDDhfDrrDdjthHmdHrzpbVCVWFpfVqCWpWqpFs
+hdvNdHtjMLJZvJwM
+nWzZtWzHzZWgQHMNLDMDfDBfQbdD
+MCPmRGGhqdmNjbDN
+FRPlMlRChCvFggWZsHsZHn
+ZGhhjdgwgcZHsPnRnSnbWscn
+tltlfMQQQftDFJpMQJsWJWJsnWBnRSBbrBWP
+lfLDpQMFMNfLjGjPPgZzwh
+HcmvWcqnHLLPDzPPHM
+MGGSfdJRdCglfrLjrjrLzLPzlF
+CsgRgfwgdCwhsssJBBwvcnQnQNMvQtQm
+nrVbwgnSTSgSnrZpjpWWqmWNHlqqpV
+BcBPhSdsDlHNtNlJNP
+RLFCQLQRRsBDDcRdGDddhCRDfwzvSCnzrbfrMfMgznwwfbZv
+HJLzLNwBNzNJLzBJztRGzQVnDgwsjbgwssZwnDZbDQ
+PhvlSvvPfMRlDbDsggbSjQSg
+mFfhMlMrfchvPPpFTPvMvPzLBHWRHJNtzJGzzHpzBtCC
+FLsgSLzLswdFgLBbWZnJDWHcmZnnBjHM
+rpbrrqfqpvCbqqQQvvpClblRDHmjmmjJJZZnWMJmmJmmcRMc
+qTppQvCfhzSVVTzbdL
+ThTJtlqfDrDtffwqRCFCCnLwdnmpzRdF
+WPQSSFsGMgQZWvFQgZgZQcCdmmzLMLCpNzCCddmLzdzm
+cvVPGPQQGsZsgGPjVFccbHhThJHhDqfhDDjHqDrr
+CgnCCnPMnMtGHDbMFQ
+zLpwpRTwwRwhRchHwmqmGvvGbqmTmNQqvq
+sHdhzlwrRVrdLzRrprrfjgfjVBnBCfSBZZgPfJ
+SPMdWwWPrZwdrrWrSPLFDfgbQDfwDFfFglDQ
+qLGBtGLpjzqmvQbvvpDvfFpR
+jhLqqHBLGjtLqSZCssSTZZMshP
+MhJCpPDpRRFRzQQNNqbcZjNZmVhjNm
+LLSlLnGDmNqLbNjb
+sfBngrBSTTSnSGHlTsHBGsBpFFdRdQPDCFPWRMzzdQWM
+ZQtmgtWfPcgPgcsb
+pvMhFThpHVTvPbcFcFJLJDsd
+MTVHchVVHjHHTcpjMVBjjnQnGqQZnlqBmrWQQBffQQ
+HfcRNJpJfhCmpGSqqGNjsjBnQl
+tTdPwwtLTrrTVPSnQsbGPsnnlFllFQ
+VvvTSTwWMrSZVwwrrmRmczJchHcHCZhRzD
+wfRwhmLRnvrHqHhV
+bJlBHlWlHMBPJzDlzMMJJSBlFnrGVrqspGGvpVGPVpGsVqvp
+DWdStDMztCCHgZCtmZ
+MHdsznVDDfcjcjDcdDjmMSCQwQpCpFCvqSZQqFzQpQ
+lhJnLJJnTNrWTRqvqqPrFwZvwqQp
+NghhtJBtnWLRTNjmcMDtjdsMfGDH
+jgsvPffVmHfDqPSrNwnQwnwNhSvw
+PZbGbCdcGdRCGtntQLQQLLwtpLNw
+RbcPFBRFcdZBBJDBmTHjsD
+dTTFJdzhmmmQpzVz
+jtNLcctGGjtfrnVMsNQNQVVWnv
+GcrcrfLtDggLftDFhZFdJFHJBVFBgZ
+TTbqTgqCqZCrwmhQnnmrgh
+MhpfsMLhfmrznLrQrF
+RsStRMtjpHMfDtWsWsNDppsqlZqBlhNlbcNdTPClPqcvBP
+lRhZPgnpRGZlSrmsLSvSzLVl
+wwHdHCfDQCJHdwdDMdHCcDsLmNVvzVsWrcVNcVzLbrLz
+dMCCwCtJdwDQJMtjhnvhpPhRZBhR
+pBqMZfDffmBnvnNmPt
+rhwLHCChrLPCMNWMCNmW
+GSMVRSVwHLMRJDQJTZlJZR
+sfstzPGRRBSngMfQLNNqgWLQLZZNgq
+scVDjjjCDTVhHlDhHdvvjwjHrZmWQmJmrJJWqNqLJbrcQqZq
+VvHlVHldTjvhpVplhVThhwjlPFSzPfGzpGBnsRffRRBPPGGF
+WNFNfnWTSLSJTnWShTvVZCnvrdPrZvddVCrt
+QwsMjppcpHCPdHsvPZ
+lcwMGgpcGbzQpMgQwbDjDQZSJTRfShffWNJSSNFFbhSb
+JDNgTgqDTggQbQGbZDWbJmVJrPVfPjlPfPwlljJC
+FZzHFSznZZtptHzcSmCVrwfPVcwwVrCcdm
+nMSStvnZFSHpLLtBtMzHnMWQvNhgDgGNRGNhgqRWTgqg
+SJcrhvbBLBLrDpllvnwHQRnllHnQ
+ffsjfMMZfVdCCgCfgTzmzslRtwFwFtTnqqHTJRQnqRqq
+CVPgmdggVjCJSrhrbrPrrSLW
+LPtcLtgddLMRRCMRpTBRrZnppvvGRvBw
+WNNJjDjqSjJSqWqzNqzlSlBTGGFvrppSrwTFpn
+qbNDWNNHbJqVtctwVmsfLCLP
+FvSSLMqgvVSQjQfgwpwWpj
+BthszRPRRNbNtzmHRbHNRNPfwJGcsswWQpffJpfsJcQFwJ
+bBtzPmRrbBRHtNCzPhqdCLFMLSSvdnvCTnML
+VPHWJPDjVLDDjDSFDJhgdnNGdbblzTzNjlnNbl
+ZprsRZMQwwmGZsvtQZgTfggqnbfdTzrbqlTd
+GZMtsscmsRZswwBQHBhDDJJPPCPWSWCJ
+mNDNNmmVMSVgGgGGqsqGLhQqsLGhLq
+nZBTZpJPhCpnnrsqbbcfczJfFccz
+HpBZZRPRHjnPPjrHnRtCZnBdShDVlMDNDgVmtmDdVDWSdN
+tBftztmztGBBCBSGHBmhvHHcchbshhThpbLJHJ
+wwzMrrMnQdldVdMvJTcLNnphphbLJv
+ZzwPVrWQlwrdStGGCWqDSSGW
+QwfrQPvhwPfzQrvWWpQpvVGGTDGsjbgNNcbfsGTsDFgG
+CtddSdZMRRdnJhRnHtZtlRMbGGDjDgggjNTZDNgTGFgGjc
+mdmdCnHhVWmLmwwL
+zLcWSWFcPJLWrWLSZrJLjVjHtjVsrdtstHdtVQgg
+nChlwwnmhlCNqhhjHMgDjVVdwMjdtd
+CNnBmNNThhhdhCdlBGGlGvNpcJbJLSbcZzcFJzpJTWPbzc
+LdPZTPVpLCVTtCNsNsfFnlDC
+SMwqcqcWQMbMhWQzBnsNfsFwrnnNNlrs
+WMMWhvQRNNNjvLgZ
+DWFGzrtfsZHZZMLt
+pNwNzNCNTpppmnvNMTLVjHLBLLjMRTLH
+PPdlPmJJNNClDdcdDDfWhzrW
+nSJVSHQQnwLThnhrML
+ddsjfRdGZjmGjRTwwTZhwrMwWwtb
+qCdfRdMmgssPfjsdjdPspBzQpScSSCBpzNBQzcQz
+fJnmRMJrlrmRmTRmbqssWVdqNVQdswdNNb
+GZggFHGhHHgHSFvtHPPPsfwgwNsVqjqNpNjNNssN
+PPSPDDBPBmBMlLfmLr
+BdqdCBqqCVPVTZBrlJcTcTJTcfcbwwmcgv
+WjGGLzLMhpWQmRGhpHfbhcDhHHHhgcsbJD
+tQzSGjWRzWBntntrZmVB
+clfLQLgfzfTLDMwNrNrrNDGCGG
+tmbpFtBvvmvdQQdFQwMJCG
+SnbtnqnSbnQQsBqzgLgVsLZTLTPfVg
+QnQBQQBVzqqzpmfgBpnqSDFPjhhWsFVhlsFFsDstFs
+MGGrTHcvRTTrrrCDpjvWtFPlFlsvjp
+bZbpTpJJBBQmBmJf
+dNVgDdVtPcNPhgTLPLpTPlnTHHRn
+WrvjvwjWwfwWjGJsrwBjQJjTQLbnSTTmpTRQSTClHTbLmn
+JqWWGvBJBwGJfJJGvwqZZddFtDFhgDqZhHNM
+VwJcNgbfvfJbfcmGLZfPhZLfZGTDhP
+CnnrlBlprsBnzQFntnZLqDhZZqThWGtWWSPL
+FllFdCjzlsCzjJNJGGJwHHVg
+fTbVBmNJCJRVbTmbfJFHsDjQHDHQjnQRsvDn
+cLWcrGtttddMPhrPhPtPrtzsnSQQBvHjFpFSpDHsMjnvjD
+PrPgPdhGWLrrqgdqcVCffbNblBwfVmwqwC
+gmBfbmlbBDqrdfrDcJ
+PwVWrQphQWWhQsJFcMPqzDdcJq
+QWCSSHpSQWCttQpCRCHNSlZBtrmBZTjvGgZjmBZjBn
+JrnhMPvtVtPVHJGrBrQwTmQmRGGB
+pSSZCFClCbbSLbljZlSlFFszzBwcZNwTzQNDmBwGTBNTBz
+ldsCCjpFjCqdLgsFjpsLFQgtnfqtJvnMtnvhWnHHMnnVWV
+hzNHzHjWNzwHjjhprpGvGgvGvvpv
+PLBVVRPDLdrgCdMrdrdC
+FmBTqTmLPrsFqTBDcTTVtNNJztqWQNQtWWtJqNNz
+fFffFvFBgHQWHdvfGglBWbqbPSSbSwVntPhZwwbS
+jJCMzNMCjNCLNMjjphPSPqhbqnwPZLSqZh
+rNpJJDzpcNMzzdBnGcQTccBvgv
+FRFMwsrzVtwstgbCHHJJPgNb
+hfZGhZDnnTTHTCCNzJjH
+hppDvznmZphZQVFQwFVWlRqFls
+jrjrgdHdFBZsBlcCGghWNgpgbCCp
+QwJJqQQMLwPTwLMMwzvzwwzhCWbvcNcCChWpchWbNGfFff
+qqFQJTmwJSPjZsrlnBjdHm
+QfffRppWfHpQSrWVpSGmGMMccSjBjmmGmc
+qdzLvbwzwdsWwnFdBBcBhMjMDvBBcBhc
+bPdZPqddqzFsZVRptZZQHVWNpN
+BzBQQHNjTSzzJDDFZFgJDJ
+qLvCnLpfCpqCnLJhntRglFncDrGrllmZFZlDrc
+JpqvfhRhLddfpbbtsdJWjHSwHHTNSQNPTVHQTb
+qVQCCVlQZWgHZMqgqWlrtScFwrmtmcJqSSsSJS
+MzdnddpNLzhRpzbzNPPBbPScjcnmrwSFjSjSJFtrwjcF
+ddTzRMPLdLbvhBRdLWGQClVVCWQZQDTGGf
+DHHTsldDNdPnVDCRDCNHllHwcMpprSMpRmphhRWhrhmzSS
+qJLBqQLvJLQgftgPjJrhrMMWSmWMmMrrSqrc
+FjfFftgLBjJPBLQZGvvZtNClnTTNGCdHTbCCNsnslH
+jHHNsNqhjsShsshdRRCDMfMbCWHBrGGC
+TJQFmnpgmTpBDCgCMCDZCGDC
+FwpQzwQTmVvwTJmFJzTcQSdhBNztNPNjSlqLhBNhSh
+vBCfSDcRMfRcRHSRRZZtPwrWWNtdSmrNVGSdwm
+gbLnTzqTbjhGqFzgWrtttQtrPQTtNPmP
+zbhjzglgzzlBGcsflsCl
+jNHDNNHjVGVDNQFDTQSFZzDQTd
+vvLwhbnpvPPgClwnfFTmTZQgffFFtTfc
+LrhrLvwrnJvhCHVVRZNMjsRJVB
+ShfcBWfvdhhJBBVwCJjHTRNwRVNC
+qQzlDqMDDDslPqGVLTNZVpPwTRZZpV
+bgbDbsqzsDTcfrgFFdgg
+vlRHvvHwvMMMTTlvjmRtBjSJmSnDnpdrpSSrJJnDQrLp
+cPfCgZZzNzzcGhNszcTPNZLrnVSJpJhDrrhSSQSpDDQn
+FbTgbGcgNgcFbPFHMqvjjRtjRWvFvt
+fZTnqfFFDNglcjdjZcfLGQJBwrGGQwbGQTBBJz
+VhvfvsPpWRChmphvRGBbBLGhSbLrBQBSwb
+pCsCsHvsstPsfRMMMtmDqFjngdFZqDHFnNFFjl
+PVVwffMlfGWMDDSwfDwVpRpsZRjBHgpSsjJSpBSp
+TdnFbqTFdmbjctcqcbRBZtJJZgsBzBBzvgHJ
+bNmbcqnnbNFLChCVCfjDfWlMjVDPCr
+JBLLjBQccLLJhcBDDlSrdFDsVhrVsR
+HgNWCgqWGbvCRRZvGWvZmszsSlrWdSdFrWzSldDF
+qvGCZGHggRNHvGTgvLnBjpjjPJwTPjLcJj
+GCGwQrwBZMZdGVdLzbqbbp
+TRfTTCtgcDmhtDmsTDVSbvpLdNpzNVRqVdVL
+CfDJjscgTcsjfhtFZljPZWZMWPlZjQ
+WsrjjfRfjjZjwjWjBpDpVpVhMBsMMSBT
+JgmqHnCHHPCCtCJgSZMgZppDTgzvzZMz
+HCGCGqqqCtmnHnqLFHWjlFrWRRbfjZccNWrR
+BJBfSfPLPvdhvrbbvpDsHgDTzgpdzgZpgN
+cVcmRnCWCqGngHpZsZsTsqNN
+jmGCVwWjjnWFMjGwcwmrLJbBJPbLSrPPTbFBTr
+SPZmmtlmqjZlZMwhlrtggqGGcCLCpfGLgqdCqF
+FBBVDVTVDJfgcddLCDdp
+zzVHvVNTbWJJTTRbVWBFJbWHmwmSPlMjPSShjlhMhhrrml
+GJZJZTsnhsDJtVZdtsZJZrBCQpLjQgBnrQgjCjQQQj
+RPSfqcRShHbFcPSfBqLLprBCwrQQQCqg
+zPzPRHbFPcRRRHPclMhSfvfZsJZVTTZsJNVMGWGVdGTWWD
+lCZrCLWCwVllGzWPPBMTFpsbGdsTpsbNMgFb
+RDjtjHcHjcHctDRtjnhtnHTgMqTMqhTbdbdZbgFqZdMN
+vfDmvfjtmvtcHmjZfSRZHQzBLrVLCJLJLfJBPzVJlwPw
+JMTHVZMWNSCwCwMS
+nsddQbDCnQQdDBPdCQCSvwpDvwffhfSvpmppvp
+BssqBFtqRHgTqVRC
+cWTTthtrgrzpCdCddtpz
+SSSLNJLGLSLfCJfJFQCJzQ
+swMPMZVMMSlMSZMqVSSHznzcqgzWTHgTnhbnrr
+RJjjgMjWShPqchtbVBPV
+DDddwCnZMHLLvDnfLrvvbVbbBtpwVBVPwtVpbcbb
+zrvnvLrlZCHrfZZLffHZHHTsTmsQgFQSFTMjjQlFTRmR
+zhTTMLRVTzLbVqwVRJgDQQsSCgCDNgsZCpqp
+rrmrBmmWrWnHjWnGWrnGnhDHSQgNSpQsCgSNgtNtDDHZ
+fBrGPGmGPBcTMfLhJVTc
+TbTCjTBSbCncHsDZDZPhZbzv
+rMwplFdlWWJMJzhhpGtHtvHSSP
+fMMfwWdWrNfJNdlVgMcTLTmLffjTqnLScCjL
+SwhTllwJDwqqBWLBbNtfhjBB
+mvllZMmRMZGFZRfctLWtWttzfNLR
+MGvHMCGpVnFGlgvVFFnpnGmmsHrDJJdSsqPqJSqDJJdTTDqD
+QTTcqJZJhHSpShhFpFzjDDwwsFzpdg
+NBMnBvmBPvwrqvgvvqgD
+bNNGmWmbbClQTQRqchhQbf
diff --git a/2022/day3.scala b/2022/day3.scala
new file mode 100644
index 0000000..08cd55e
--- /dev/null
+++ b/2022/day3.scala
@@ -0,0 +1,23 @@
+import scala.io.Source
+
+extension (s: String) def splitHalf: (String, String) = (s.substring(0, s.length()/2), s.substring(s.length()/2))
+
+def priorityScore(c: Char): Int = c match
+	case c if 'a' to 'z' contains c => (c - 'a' + 1)
+	case c if 'A' to 'Z' contains c => (c - 'A' + 27)
+	case _ => 0
+
+
+@main def main() =
+	val inputLines = Source.fromFile("day3-input").getLines.toArray  // Can't leave it lazy as Part 1 will consume it
+
+	// Part 1 - find items common between first half and second half of each line
+	println(inputLines.map(line =>
+		val (knapsack1, knapsack2) = line.splitHalf
+		priorityScore((knapsack1.toSet & knapsack2.toSet).head)
+	).sum)
+
+	// Part 2 - find items common between lines in groups of 3 lines
+	println(inputLines.grouped(3).map(group =>
+		priorityScore(group.map(_.toSet).reduce(_&_).head)
+	).sum)