Nov 6, 2023 · Oct 28, 2023 · Oct 28, 2023 · Oct 29, 2023 · Oct 29, 2023 · Oct 29, 2023
diff --git a/problems/0392.判断子序列.md b/problems/0392.判断子序列.md
Original file line number	Diff line number	Diff line change
Expand Up		@@ -216,6 +216,8 @@ const isSubsequence = (s, t) => {

		### TypeScript:

	> 二维数组

		```typescript
		function isSubsequence(s: string, t: string): boolean {
		/**
Expand All		@@ -236,6 +238,31 @@ function isSubsequence(s: string, t: string): boolean {
		}
		```

	> 滚动数组
	```typescript
	function isSubsequence(s: string, t: string): boolean {
	const sLen = s.length
	const tLen = t.length
	const dp: number[] = new Array(tLen + 1).fill(0)

	for (let i = 1; i <= sLen; i++) {
	let prev: number = 0;
	let temp: number = 0;
	for (let j = 1; j <= tLen; j++) {
	// 备份一下当前状态(经过上层迭代后的)
	temp = dp[j]
	// prev 相当于 dp[j-1](累加了上层的状态)
	// 如果单纯 dp[j-1] 则不会包含上层状态
	if (s[i - 1] === t[j - 1]) dp[j] = prev + 1
	else dp[j] = dp[j - 1]
	// 继续使用上一层状态更新参数用于当前层下一个状态
	prev = temp
	}
	}
	return dp[tLen] === sLen
	}
	```

		### Go:

		二维DP:
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