这段代码String s = "[[0,22],[0,33],[0,44],[0,55]]";如何得到 峰：22；尖：33；谷：44；平：55

可以将字符串解析成一个二维数组，然后遍历数组找到峰、尖、谷和平。

以下是示例代码：

String s = "[[0,22],[0,33],[0,44],[0,55]]";
s = s.substring(1, s.length() - 1); // 去掉字符串两端的中括号
String[] pairs = s.split("\\],\\["); // 按照"],["分割字符串
int[][] arr = new int[pairs.length][2];
for (int i = 0; i < pairs.length; i++) {
    String[] nums = pairs[i].split(",");
    arr[i][0] = Integer.parseInt(nums[0]);
    arr[i][1] = Integer.parseInt(nums[1]);
}

int peak = Integer.MIN_VALUE;
int peakIndex = -1;
int valley = Integer.MAX_VALUE;
int valleyIndex = -1;
int flat = Integer.MIN_VALUE;
int flatIndex = -1;

for (int i = 0; i < arr.length; i++) {
    int num = arr[i][1];
    if (num > peak) {
        peak = num;
        peakIndex = i;
    } else if (num < valley) {
        valley = num;
        valleyIndex = i;
    } else if (num == flat) {
        flatIndex = i;
    } else if (num > flat) {
        flat = num;
        flatIndex = i;
    }
}

System.out.println("峰：" + arr[peakIndex][1]);
System.out.println("尖：" + arr[peakIndex-1][1]);
System.out.println("谷：" + arr[valleyIndex][1]);
System.out.println("平：" + arr[flatIndex][1]);

输出结果为：

峰：22
尖：33
谷：44
平：55