I need assistance creating a walking robot function in JavaScript, but I am encountering a call stack size error.
function walk(meter) {
if(meter < 0) {
count = 0;
} else if(meter <= 2) {
count = meter;
} else if(meter == 3) {
count = walk(meter-1)+walk(meter-2)+1;
} else {
count = walk(meter-1)+walk(meter-2)+walk(meter-3);
}
return count;
}
console.log(walk(100));
To prevent exceeding the call stack size due to exponential complexity, you can utilize memoization to convert it into a polynomial one. This will optimize your code and reduce the time complexity to O(100).
let obj = {};
function climb(steps) {
if (steps < 0) {
count = 0;
} else if (obj[steps] != undefined) {
return obj[steps];
} else if (steps <= 2) {
count = steps;
} else if (steps == 3) {
count = climb(steps - 1) + climb(steps - 2) + 1;
} else {
count = climb(steps - 1) + climb(steps - 2) + climb(steps - 3);
}
obj[steps] = count;
return count;
}
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