build

docs/chapter_hashing/hash_algorithm.md

@@ -560,6 +560,7 @@ index = hash(key) % capacity
     /* 加法哈希 */
     fun addHash(key: String): Int {
         var hash = 0L
+        val MODULUS = 1000000007
         for (c in key.toCharArray()) {
             hash = (hash + c.code) % MODULUS
         }
@@ -569,6 +570,7 @@ index = hash(key) % capacity
     /* 乘法哈希 */
     fun mulHash(key: String): Int {
         var hash = 0L
+        val MODULUS = 1000000007
         for (c in key.toCharArray()) {
             hash = (31 * hash + c.code) % MODULUS
         }
@@ -578,6 +580,7 @@ index = hash(key) % capacity
     /* 异或哈希 */
     fun xorHash(key: String): Int {
         var hash = 0
+        val MODULUS = 1000000007
         for (c in key.toCharArray()) {
             hash = hash xor c.code
         }
@@ -587,6 +590,7 @@ index = hash(key) % capacity
     /* 旋转哈希 */
     fun rotHash(key: String): Int {
         var hash = 0L
+        val MODULUS = 1000000007
         for (c in key.toCharArray()) {
             hash = ((hash shl 4) xor (hash shr 28) xor c.code.toLong()) % MODULUS
         }

docs/chapter_hashing/hash_collision.md

@@ -1312,7 +1312,7 @@ comments: true
 
     ```kotlin title="hash_map_chaining.kt"
     /* 链式地址哈希表 */
-    class HashMapChaining() {
+    class HashMapChaining {
         var size: Int // 键值对数量
         var capacity: Int // 哈希表容量
         val loadThres: Double // 触发扩容的负载因子阈值

docs/chapter_hashing/hash_map.md

@@ -1646,7 +1646,8 @@ index = hash(key) % capacity
         fun valueSet(): MutableList<String> {
             val valueSet = mutableListOf<String>()
             for (pair in buckets) {
-                pair?.let { valueSet.add(it._val) }
+                if (pair != null)
+                    valueSet.add(pair._val)
             }
             return valueSet
         }
@@ -1656,7 +1657,7 @@ index = hash(key) % capacity
             for (kv in pairSet()) {
                 val key = kv.key
                 val _val = kv._val
-                println("${key} -> ${_val}")
+                println("$key -> $_val")
             }
         }
     }