solve: word break

Author: tolluset

word-break/tolluset.ts

@@ -0,0 +1,40 @@
+/*
+ * TC: O(n^2)
+ * SC: O(n)
+ * */
+function wordBreak(s: string, wordDict: string[]): boolean {
+  const n = s.length;
+  const wordSet = new Set(wordDict);
+  const dp = Array(n + 1).fill(false);
+
+  dp[0] = true;
+
+  for (let i = 1; i <= n; i++) {
+    for (let j = 0; j < i; j++) {
+      if (dp[j] && wordSet.has(s.slice(j, i))) {
+        dp[i] = true;
+        break;
+      }
+    }
+  }
+
+  return dp[n];
+}
+
+const tc1 = wordBreak("leetcode", ["leet", "code"]); // true
+console.info("🚀 : tolluset.ts:17: tc1=", tc1);
+
+const tc2 = wordBreak("applepenapple", ["apple", "pen"]); // true
+console.info("🚀 : tolluset.ts:20: tc2=", tc2);
+
+const tc3 = wordBreak("catsandog", ["cats", "dog", "sand", "and", "cat"]); // false
+console.info("🚀 : tolluset.ts:23: tc3=", tc3);
+
+const tc4 = wordBreak("cars", ["car", "ca", "rs"]); // true
+console.info("🚀 : tolluset.ts:27: tc4=", tc4);
+
+const tc5 = wordBreak("aaaaaaa", ["aaaa", "aaa"]); // true
+console.info("🚀 : tolluset.ts:32: tc5=", tc5);
+
+const tc6 = wordBreak("cbca", ["bc", "ca"]); // false
+console.info("🚀 : tolluset.ts:43: tc6=", tc6);