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  1. Prepare
  2. Data Structures
  3. Arrays
  4. Array Manipulation
  5. Discussions

Array Manipulation

  • i_am_amar
     + 0 comments

    My approach in JavaScript :-)

    function arrayManipulation(n, queries) {
    let diff = new Array(n + 1).fill(0);

    for (let i = 0; i < queries.length; i++) {
        // destructure the array
        let [a, b, k] = queries[i];
        
        // do the prefix sum
        diff[a - 1] += k;
        diff[b] -= k;    
    }
    
    let sum = 0;
    let max = -Infinity;
        
    for (let j = 0; j < n; j++) {
        sum += diff[j];
        
        if (sum > max) {
            max = sum;
        }
    }
    return max;
}