add 169

problems/0058_Length_of_Last_Word/26逝水流.js

@@ -0,0 +1,25 @@
+/**
+ * @param {string} s
+ * @return {number}
+ */
+// 战胜85.26%
+var lengthOfLastWord = function(s) {
+    if (!s || s.length === 0) {
+        return 0
+    }
+    let result = 0
+    let total = s.length
+    while (total) {
+        if (s[total - 1] != ' ') {
+            result ++
+        } else if (result !== 0) {
+            break
+        }
+        total --
+    }
+    return result
+}
+
+console.log(lengthOfLastWord('Hello World'))
+console.log(lengthOfLastWord('  '))
+console.log(lengthOfLastWord('Hello World '))

problems/0066_Plus_One/26逝水流.js

@@ -0,0 +1,33 @@
+/**
+ * @param {number[]} digits
+ * @return {number[]}
+ */
+// 战胜34.22%
+var plusOne = function(digits) {
+    if (!digits || digits.length === 0) {
+        return [1]
+    }
+    let total = digits.length
+    let flag = 0
+    let midRst = digits[total - 1] + 1
+    while (total > 0) {
+        midRst = midRst + flag
+        digits[total - 1] = midRst % 10
+        flag = 1
+        total --
+        if (midRst < 10) {
+            flag = 0
+            break
+        }
+        midRst = digits[total - 1]
+    }
+    if (flag) {
+        digits.unshift(1)
+    }
+    return digits
+};
+
+console.log(plusOne([1, 2, 3]))
+console.log(plusOne([4, 3, 2, 1]))
+console.log(plusOne([1, 5, 9, 9]))
+console.log(plusOne([9, 9, 9, 9, 9]))

problems/0169_Majority_Element/26逝水流.js

@@ -0,0 +1,24 @@
+/**
+ * @param {number[]} nums
+ * @return {number}
+ */
+var majorityElement = function(nums) {
+    let mergeNums = {}
+    nums.forEach(num => {
+        if (!mergeNums[num]) {
+            mergeNums[num] = 1
+        } else {
+            mergeNums[num] += 1
+        }
+    })
+    let result = nums[0]
+    for(let key in mergeNums) {
+        if (mergeNums[result] < mergeNums[key]) {
+            result = key
+        }
+    }
+    return result
+}
+
+console.log(majorityElement([3, 2, 3]))
+console.log(majorityElement([2,2,1,1,1,2,2]))