[+] 之前忘记把 bills 那道题解源码放进来了w

players/Hykilpikonna/KotlinProject/src/main/kotlin/org/hydev/experiment/CtfBills.kt

@@ -0,0 +1,86 @@
+package org.hydev.experiment
+
+import java.io.File
+import kotlin.math.pow
+
+/**
+ * TODO: Write a description for this class!
+ *
+ * @author HyDEV Team (https://github.com/HyDevelop)
+ * @author Hykilpikonna (https://github.com/hykilpikonna)
+ * @author Vanilla (https://github.com/VergeDX)
+ * @since 2020-10-31 21:30
+ */
+fun main(args: Array<String>)
+{
+
+    val str = File("./bills.csv").readText().replace("\r\n", "\n")
+
+    var total = 0
+    str.split("\n").forEachIndexed { i, line ->
+        if (line.isEmpty()) return@forEachIndexed
+
+        try
+        {
+            val chinese = line.split(",")[0]
+            val count = line.split(",")[1].toInt()
+            total += chineseToNum(chinese) * count
+        }
+        catch (_: NumberFormatException) { }
+    }
+
+    println(total)
+}
+
+val chineseNumbers = listOf('零', '壹', '贰', '叁', '肆', '伍', '陆', '柒', '捌', '玖')
+val scientific = mapOf('拾' to 1, '佰' to 2, '仟' to 3, '万' to 4, '亿' to 8, '兆' to 12)
+val units = mapOf('元' to 100, '角' to 10, '分' to 1)
+
+fun chineseToNum(chinese: String): Int
+{
+    var chinese = chinese
+    chineseNumbers.forEachIndexed { n, c -> chinese = chinese.replace(c.toString(), n.toString()) }
+
+    var amount = 0
+    var pendingAmount = 0
+    var digitAmount = 0
+    for (c in chinese) // 每个字符
+    {
+        // 是数字
+        if (c.isDigit())
+        {
+            // 处理中价格加上这个数
+            digitAmount += c.toString().toInt();
+        }
+
+        // 是个十百千万
+        else if (scientific.containsKey(c))
+        {
+            // 特殊情况: 十在前面不是单位而是 1x
+            if (c == '拾' && chinese.startsWith("拾")) pendingAmount = 10
+
+            // 处理中价格乘上 10^x
+            else
+            {
+                pendingAmount += digitAmount * 10.0.pow(scientific[c]!!).toInt()
+                digitAmount = 0
+            }
+        }
+
+        // 是单位
+        else if (units.containsKey(c))
+        {
+            // 结束处理, 添加, 重置
+            amount += pendingAmount * units[c]!! + digitAmount * units[c]!!
+            pendingAmount = 0
+            digitAmount = 0
+        }
+
+        else
+        {
+            println("Unknown: $c")
+        }
+    }
+
+    return amount
+}

players/Hykilpikonna/KotlinProject/src/main/kotlin/org/hydev/experiment/CtfBillsTests.kt

@@ -0,0 +1,38 @@
+package org.hydev.experiment
+
+import org.junit.Test
+
+/**
+ * TODO: Write a description for this class!
+ *
+ * @author HyDEV Team (https://github.com/HyDevelop)
+ * @author Hykilpikonna (https://github.com/hykilpikonna)
+ * @author Vanilla (https://github.com/VergeDX)
+ * @since 2020-10-31 22:15
+ */
+class CtfBillsTests
+{
+    @Test
+    fun test715()
+    {
+        test("柒元壹角伍分", 715)
+    }
+
+    @Test
+    fun test1046()
+    {
+        test("拾元肆角陆分", 1046)
+    }
+
+    @Test
+    fun test15573()
+    {
+        test("壹佰伍拾柒元柒角叁分", 15773)
+    }
+
+    fun test(s: String, i: Int)
+    {
+        print(chineseToNum(s))
+        assert(chineseToNum(s) == i)
+    }
+}