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src/Test135.kt

@@ -0,0 +1,39 @@
+class Test135 {
+    class Solution {
+        fun candy(ratings: IntArray): Int {
+            if (ratings.size == 1){
+                return 1
+            }
+
+            val results = Array(ratings.size){1}
+
+            // 正着算
+            if (ratings[0] > ratings[1]){
+                results[0] = 2
+            }
+
+            for (i in 1..ratings.lastIndex){
+                if (ratings[i] > ratings[i-1] && results[i] <= results[i-1]){
+                    results[i] = results[i-1] + 1
+                }
+            }
+
+            // 反着修
+            for (i in 0..<ratings.lastIndex){
+                val j = ratings.lastIndex - i
+                if (ratings[j] < ratings[j-1] && results[j] >= results[j-1] ){
+                    results[j-1] = results[j] + 1
+                }
+            }
+
+//            results.forEach { print(it) }
+//            println()
+            return results.sum()
+        }
+    }
+    fun test(){
+        println(Solution().candy(intArrayOf(1,2,87,87,87,2,1)))
+        println(Solution().candy(intArrayOf(1,0,2)))
+        println(Solution().candy(intArrayOf(1,2,2)))
+    }
+}

src/Test205.kt

@@ -0,0 +1,23 @@
+class Test205 {
+    class Solution {
+        fun isIsomorphic(s: String, t: String): Boolean {
+            val f = mutableMapOf<Char,Char>()
+            val fp = mutableMapOf<Char,Char>()
+            for (i in s.indices){
+                if (f.containsKey(s[i]) || fp.containsKey(t[i])){
+                    if (t[i] != f[s[i]] || s[i] != fp[t[i]]){
+                        return false
+                    }
+                }else{
+                    f[s[i]] = t[i]
+                    fp[t[i]] = s[i]
+                }
+            }
+            return true
+        }
+    }
+    fun test(){
+        println(Solution().isIsomorphic("badc","baba"))
+
+    }
+}