JAVA Solution

public static int equalStacks(List h1, List h2, List h3) { // Write your code here Stack s1 = new Stack<>(); Stack s2 = new Stack<>(); Stack s3 = new Stack<>(); int sum1 = 0; int sum2 = 0; int sum3 = 0;

for (int i = h1.size()-1; i>=0;i--){
    s1.push(h1.get(i));
    sum1 += h1.get(i);

}
for (int i = h2.size()-1; i>=0;i--){
    s2.push(h2.get(i));
    sum2 += h2.get(i);

}
for (int i = h3.size()-1; i>=0;i--){
    s3.push(h3.get(i));
    sum3 += h3.get(i); 
}
int min = Integer.MIN_VALUE;
while (sum1 != sum2 || sum2 != sum3){
    min = Math.min(sum1,Math.min(sum2,sum3));
    if (sum1>min ){
        sum1 = sum1 - s1.pop();

    }
    if (sum2>min ){
        sum2 = sum2 - s2.pop();

    }
    if (sum3>min ){
        sum3 = sum3 - s3.pop();

    }
}
return sum1;


}