Hi, thanks for the wonderful explanation. Can you please check where I am wrong in this java code which I feel is similar to the one you posted.

public static long arrayManipulation(int n, List> queries) {

    long[] baseArr = new long[n+1];
    long maxSum = 0;
    if(queries == null || queries.size() ==0){
        return 0;
    }
    for(List<Integer> query : queries){
        int start = query.get(0)-1;
        int end = query.get(1) - 1;
        baseArr[start]+= query.get(2);
        baseArr[end+1]-= query.get(2);
    }
    int sum=0;
    for(long item : baseArr){
        sum+=item;
        maxSum = Math.max(sum,maxSum);
    }
    return maxSum;
}