comefrom: <awangdev>Best Time to Buy and Sell Stock III_1.java
code: public int maxProfit(int[] prices) {
          if (prices == null || prices.length == 0) {
              return 0;
          }
          int profit = 0;
          int n = prices.length;
          int[][] dp = new int[n][5];
          
          dp[0][0] = 0; 
          for (int i = 1; i < n; i++) {
              for (int j = 1; j < 5; j++) {
                  int dailyDiff = prices[i] - prices[i - 1];
                  if (j % 2 == 0) { 
                      dp[i][j] = Math.max(dp[i - 1][j], dp[i - 1][j - 1] + dailyDiff);
                      profit = Math.max(profit, dp[i][j]);
                  } else { 
                      dp[i][j] = Math.max(dp[i - 1][j] + dailyDiff, dp[i - 1][j - 1]);
                  }
              }
          }
          return profit;
      }
masked: public int sample_funcname ( int [ ] var_0 ) {
    if ( var_0 == null || var_0 . length == 0 ) {
      return 0 ;
    }
    int var_4 = 0 ;
    int var_5 = var_0 . length ;
    int [ ] [ ] var_7 = new int [ var_5 ] [ 5 ] ;
    var_7 [ 0 ] [ 0 ] = 0 ;
    for ( int var_9 = 1 ;
    var_9 < var_5 ;
    var_9 ++ ) {
      for ( int var_10 = 1 ;
      var_10 < 5 ;
      var_10 ++ ) {
        int var_11 = var_0 [ var_9 ] - var_0 [ var_9 - 1 ] ;
        if ( var_10 % 2 == 0 ) {
          var_7 [ var_9 ] [ var_10 ] = Math . max ( var_7 [ var_9 - 1 ] [ var_10 ] , var_7 [ var_9 - 1 ] [ var_10 - 1 ] + var_11 ) ;
          var_4 = Math . max ( var_4 , var_7 [ var_9 ] [ var_10 ] ) ;
        }
        else {
          var_7 [ var_9 ] [ var_10 ] = Math . max ( var_7 [ var_9 - 1 ] [ var_10 ] + var_11 , var_7 [ var_9 - 1 ] [ var_10 - 1 ] ) ;
        }
      }
    }
    return var_4 ;
  }
  