feat: 移除链表元素

Author: sl1673495

双指针/搜索二维矩阵 II-240.js

@@ -0,0 +1,24 @@
+/**
+ * @param {number[][]} matrix
+ * @param {number} target
+ * @return {boolean}
+ */
+let searchMatrix = function (matrix, target) {
+  let y = matrix.length
+  if (!y) return false
+  let x = matrix[0].length
+
+  let row = y - 1
+  let column = 0
+  while (row >= 0 && column < x) {
+      let val = matrix[row][column]
+      if (val > target) {
+          row--
+      } else if (val < target) {
+          column++
+      } else if (val === target) {
+          return true
+      }
+  }
+  return false
+};

链表/移除链表元素-203.js

@@ -0,0 +1,18 @@
+let removeElements = function (head, val) {
+  let root = new ListNode()
+  root.next = head
+  let cur = root
+  while (cur) {
+    let next = cur.next
+    if (!next) {
+      break
+    }
+    let nextVal = next.val
+    if (nextVal === val) {
+      cur.next = cur.next.next
+    } else {
+      cur = cur.next
+    }
+  }
+  return root.next
+}