NightXlt
diff --git a/‎src/main/java/com/blankj/pramp/Decrypt.kt
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+22Lines changed: 22 additions & 0 deletions b/‎src/main/java/com/blankj/pramp/Decrypt.kt
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+22Lines changed: 22 additions & 0 deletions
@@ -0,0 +1,22 @@
+package com.blankj.pramp
+
+class Decrypt {
+
+    fun decrypt(word: String): String {
+        val s = StringBuilder()
+        var oldValue = 1
+        var newValue: Int
+        val a = 'a'.code
+
+        for (i in word.indices) {
+            newValue = word[i].code - oldValue
+            oldValue = word[i].code
+
+            while (newValue < a) {
+                newValue += 26
+            }
+            s.append(newValue.toChar())
+        }
+        return s.toString()
+    }
+}