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leetcode update
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@ -2540,3 +2540,43 @@ func countSubarrays(nums []int, minK int, maxK int) int64 {
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### 总结
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本次解题代码的运行速度超过了100%的提交, 因此不再看他人的题解了, 同时庆祝一下自己拿到了3月份的奖章, 证明这个月每天都在坚持. 下个月希望能继续坚持下去.
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## day34 2024-04-01
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### 58. Length of Last Word
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Given a string s consisting of words and spaces, return the length of the last word in the string.
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A word is a maximal substring consisting of non-space characters only.
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### 题解
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本题是一道简单题, 直接从头开始遍历, 遇到空格结束当前单词计数, 再遇到新字符时重新计数, 直到遍历完整个字符串即可.
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### 代码
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```go
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func lengthOfLastWord(s string) int {
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length := 0
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flag := false
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for _, value := range s{
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if value == ' ' {
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flag = true
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}
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if value != ' ' {
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if flag{
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length = 1
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flag = false
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}else{
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length++
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}
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}
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}
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return length
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}
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```
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### 总结
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前面的题解大多用了go strings库中的函数来按空格分割字符串, 再返回最后一个分割出来的字符串长度. 一般实际应用中, 使用官方库是第一选择, 因为官方库大多对这些操作做了大量优化, 效率会高得多.
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