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Very large negative values are not necessary. See that an hourglass is made up of 7 digits. the sum of 'those' 7 digits can be minimum when each digit is itself minimum, i.e, -9. Hence, the minimum sum will be (7)x(-9), which equals -63. So, we can initialize minimum as -64
2D Array - DS
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Guys we also have one more alternative, with the help of flag we can achieve it,
if (flag) {
max = sum;
flag = false;
}
if (max < sum) {
max = sum;
}
will it not give a compilation error i.e max is not initialized or something like that?
or in JS:
let max;
if (typeof max !== 'number' || sum > max) { max = sum }
I used, max = -Infinity
Very large negative values are not necessary. See that an hourglass is made up of 7 digits. the sum of 'those' 7 digits can be minimum when each digit is itself minimum, i.e, -9. Hence, the minimum sum will be (7)x(-9), which equals -63. So, we can initialize minimum as -64
you could actually initialize it with -63 ,would still work.
In JS, I used
let maxSum = Number.MIN_SAFE_INTEGER;