subrectangle_queries.js

/**
 * @param {number[][]} rectangle
 */
var SubrectangleQueries = function(rectangle) {
    this.rectCoords = rectangle;
};

/** 
 * @param {number} row1 
 * @param {number} col1 
 * @param {number} row2 
 * @param {number} col2 
 * @param {number} newValue
 * @return {void}
 */
SubrectangleQueries.prototype.updateSubrectangle = function(row1, col1, row2, col2, newValue) {
    for(let i = row1; i <= row2; i++) {
        for(let j = col1; j <= col2; j++) {
            this.rectCoords[i][j] = newValue;
        }
    }
};

/** 
 * @param {number} row 
 * @param {number} col
 * @return {number}
 */
SubrectangleQueries.prototype.getValue = function(row, col) {
    return this.rectCoords[row][col];
};

/** 
 * Your SubrectangleQueries object will be instantiated and called as such:
 * var obj = new SubrectangleQueries(rectangle)
 * obj.updateSubrectangle(row1,col1,row2,col2,newValue)
 * var param_2 = obj.getValue(row,col)
 */