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How to Solve the Staircase Problem with JavaScript using Memoization

function stairSteps(N) {

  // store repeat values in memo to prevent repeat computations
  const memo = [];

  function stepsM(N) {

    if (N === 0) return 1;
    else if (N < 0) return 0;

    if (memo[N] !== undefined) return memo[N];
    else {
      memo[N] = stepsM(N - 1) + stepsM(N - 2) + stepsM(N - 3);
      return memo[N];
    }
  }

  return stepsM(N);
}
Comment

How to Solve the Staircase Problem with JavaScript using Memoization

function stairSteps(N) {

  // store repeat values in memo to prevent repeat computations
  const memo = [];

  function stepsM(N) {

    if (N === 0) return 1;
    else if (N < 0) return 0;

    if (memo[N] !== undefined) return memo[N];
    else {
      memo[N] = stepsM(N - 1) + stepsM(N - 2) + stepsM(N - 3);
      return memo[N];
    }
  }

  return stepsM(N);
}
Comment

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