[tedkimdev] WEEK10 Solutions

jump-game/tedkimdev.rs

@@ -0,0 +1,14 @@
+// TC: O(n)
+// SC: O(1)
+impl Solution {
+    pub fn can_jump(nums: Vec<i32>) -> bool {
+		let mut last = nums.len() as i32 - 1;
+
+		for i in (0..nums.len() as i32 - 1).rev() {
+			if i + nums[i as usize] >= last {
+				last = i;
+			}
+		}
+		last == 0
+    }
+}

search-in-rotated-sorted-array/tedkimdev.go

@@ -0,0 +1,29 @@
+// TC: O(log n)
+// SC: O(1)
+func search(nums []int, target int) int {
+	l, r := 0, len(nums)-1
+
+	for l <= r {
+		m := (l + r) / 2
+		if nums[m] == target {
+			return m
+		}
+
+		// left half is sorted
+		if nums[l] <= nums[m] {
+			if target >= nums[l] && target < nums[m] {
+				r = m - 1
+			} else {
+				l = m + 1
+			}
+		} else {
+			if target > nums[m] && target <= nums[r] {
+				l = m + 1
+			} else {
+				r = m - 1
+			}
+		}
+	}
+
+	return -1
+}