Day 03 part one
Signed-off-by: Christopher Arndt <chris@chrisarndt.de>
This commit is contained in:
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610a2527ec
commit
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...766.......821.547.....577......................................387.....................56..........446.793..........292..................
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...$...........716..&336.......470.325.................*.84........$..34....*.....+.....#.....*76....#.........303.433........-........&....
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...*..........451-.442..................*...................................+....*....*.......918...680...........................529+......
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....844.587.....................347...425.....974......348.........$615....174.330..............*..................556.......972*...........
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..........&...676.........947..%.................*976.*.................45..........192........272.131..............-..977*......85.........
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.588..........*........$.$.......515...493.............73.....%...........*.....428.*....................*968..............964.......153*274
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....=..860...157....347............*..*......954.930.......472...618....899......%..726.330..44.......687........$..........................
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..35..633.
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......#...
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617*......
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.....+.58.
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..592.....
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......755.
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...$.*....
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.664.598..
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@ -0,0 +1,59 @@
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import std/[cmdline, sequtils, strformat, strutils]
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var fn: string
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if paramCount() > 0:
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fn = paramStr(1)
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else:
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fn = "input_03.txt"
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var result = 0
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var lines = readFile(fn).strip.splitLines
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var grid = newSeqWith(lines.len, newSeq[char](lines[0].strip.len))
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proc isAdjacentToSymbol(row, col: int): bool =
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for i in @[row - 1, row, row + 1]:
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if i < 0 or i >= grid.len:
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continue
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for j in @[col - 1, col, col + 1]:
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if i == row and j == col:
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continue
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if j < 0 or j >= grid[i].len:
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continue
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var ch = grid[i][j]
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if not ch.isDigit and ch != '.':
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return true
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return false
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for i, line in lines:
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for j, ch in line.strip:
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grid[i][j] = ch
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#echo &"Rows: {grid.len}"
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#echo &"Cols: {grid[0].len}"
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for i, row in grid:
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var isPartNumber = false
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var number = ""
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for j, ch in row:
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if ch.isDigit:
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number &= ch
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if isAdjacentToSymbol(i, j):
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isPartNumber = true
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else:
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if isPartNumber:
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#echo number.parseInt
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result += number.parseInt
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elif number.len > 0:
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echo &"Not a part number: {number.parseInt} (row {i}, col {j})"
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number = ""
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isPartNumber = false
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# account for numbers going untl the end of the row
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if isPartNumber:
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result += number.parseInt
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echo &"Result: {result}"
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Reference in New Issue