计算两个字符串的最大公共字串的长度，字符不区分大小写

private static void getCommonStrLength(String a , String b) {
    int aLen = a.length();
    int bLen = b.length();

    int[][] dp = new int[aLen+1][bLen+1];
    for (int i = 1; i <= aLen; i++) {
        for (int j = 1; j <= bLen; j++) {
            if(Character.toUpperCase(a.charAt(i-1)) == Character.toUpperCase(b.charAt(j-1))){
                dp[i][j] = dp[i-1][j-1] + 1;
            }
        }
    }
    for (int i = 1; i <= aLen; i++) {
        for (int j = 1; j <= bLen; j++) {
            System.out.print(dp[i][j]+",");
        }
        System.out.println();
    }
}