finalHP

with Carmen Salas • 2024/11/13

Solution

/*
**Problem**
Given an initialHP: Number and deltas: Array:
  We simulate a 'game' where each index of the array is a 'level' which
  mutates initialHP. We are supposed to return the 'end' state of initialHP
  after it goes through all the mutations specified by the 'deltas' array.

**Examples/Edge Cases:** 
initialHP: 0
deltas: [-12, 24, -36, 1, -2, 3]

output: 3


**Data Structures**
- Arrays
- Number

**Algorithm** 
Iterate through the 'deltas' array:
  - for each item, mutate iniitialHP based on its value
    - if initialHP is to go under 0, set its value back to 0.
    - if initialHP is to go over 100, set its value back to 100.
Return the final hp.
*/

function solution(initialHP, deltas) {
  // hom and reduce
  return deltas.reduce((hp, delta) => {
    const temp = hp + delta;
    if (temp < 0) return 0;
    else if (temp > 100) return 100;
    else return temp;
  }, initialHP)
  
  // for loop
  for (let i = 0; i < deltas.length; i++) {
    const temp = initialHP + deltas[i];
    if (temp < 0) initialHP = 0;
    else if (temp > 100) initialHP = 100;
    else initialHP = temp;
  }
  return initialHP;
}