初始代码提交

2026-01-14 10:36:27 +08:00
parent 600aa4dbb0
commit 196cacfe5a
268 changed files with 22545 additions and 2 deletions
@@ -0,0 +1,70 @@
+package com.sw.inbound
+
+import org.junit.Test
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+class ExampleUnitTest {
+
+    @Test
+    fun addition_isCorrect() {
+//        println(4, 2 + 2)
+        val decimalPlaces = 2
+        val r1 = "%.${decimalPlaces}f".format(0.1)
+        logStr("r1", r1)
+        val r2 = "%.${decimalPlaces}f".format(1.0)
+        logStr("r2", r2)
+        val r3 = "%.${decimalPlaces}f".format(1.23)
+        logStr("r3", r3)
+    }
+
+    fun log(tag: String, msg: Boolean) {
+        println("$tag, result = $msg")
+    }
+
+    fun logStr(tag: String, msg: String) {
+        println("$tag, result = $msg")
+    }
+
+    @Test
+    fun testFloat() {
+        log("0.00", "0.00".isValidFloat())
+        log("0.01", "0.01".isValidFloat())
+        log("00", "00".isValidFloat())
+        log("01", "01".isValidFloat())
+        log("10", "10".isValidFloat())
+        log("10.00", "10.00".isValidFloat())
+        log("10.01", "10.01".isValidFloat())
+        log("10.011", "10.011".isValidFloat())
+        log("0.0-1", "0.0".isValidFloat(1))
+        log("10.011-1", "10.011".isValidFloat(1))
+        log("10.01-1", "10.01".isValidFloat(1))
+        log("10.0-1", "10.0".isValidFloat(1))
+        log("10.0-0", "10.0".isValidFloat(0))
+        log("10.01-0", "10.01".isValidFloat(0))
+    }
+
+    fun String.isValidFloat(maxFractionDigits: Int = 2): Boolean {
+        if (isEmpty()) return false
+        if (startsWith(".")) return false
+
+        // 处理前导零的情况
+        if (length > 1 && startsWith("0")) {
+            // 允许 "0" 和 "0.x" 但不允许 "00", "01", "00.1" 等
+            if (!startsWith("0.")) {
+                return false
+            }
+        }
+
+        // 构建动态正则表达式
+        val decimalRegex = when {
+            maxFractionDigits <= 0 -> Regex("^\\d+$")  // 不允许小数
+            else -> Regex("^\\d+\\.?\\d{0,${maxFractionDigits}}$")
+        }
+
+        return matches(decimalRegex)
+    }
+}